OLinuXino-MAXI
Open-source single-board Linux computer
USER’S MANUAL
Revision J, October 2012
Designed by OLIMEX Ltd, 2012

All boards produced by Olimex LTD are ROHS compliant

OLIMEX© 2012

OLinuXino-MAXI User's Manual

DISCLAIMER© 2012 Olimex Ltd. Olimex®, logo and combinations thereof, are registered trademarks of Olimex Ltd.
Other product names may be trademarks of others and the rights belong to their respective owners.
The information in this document is provided in connection with Olimex products. No license, express
or implied or otherwise, to any intellectual property right is granted by this document or in connection
with the sale of Olimex products.
The Hardware project is released under the Creative Commons Attribution-Share Alike 3.0 United States
License. You may reproduce it for both your own personal use, and for commertial use. You will have toprovide a link to the original creator of the project http://www.olimex.com on any documentation or website.
You may also modify the files, but you must then release them as well under the same terms. Credit can be
attributed through a link to the creator website: http://www.olimex.com
The software is released under GPL.
It is possible that the pictures in this manual differ from the latest revision of the board.
The product described in this document is subject to continuous development and improvements. All
particulars of the product and its use contained in this document are given by OLIMEX in good faith.
However all warranties implied or expressed including but not limited to implied warranties ofmerchantability or fitness for purpose are excluded. This document is intended only to assist the reader in theuse of the product. OLIMEX Ltd. shall not be liable for any loss or damage arising from the use of any
information in this document or any error or omission in such information or any incorrect use of the
product.
This evaluation board/kit is intended for use for engineering development, demonstration, or evaluation
purposes only and is not considered by OLIMEX to be a finished end-product fit for general consumer use.
Persons handling the product must have electronics training and observe good engineering practicestandards. As such, the goods being provided are not intended to be complete in terms of required design-,
marketing-, and/or manufacturing-related protective considerations, including product safety andenvironmental measures typically found in end products that incorporate such semiconductor components orcircuit boards.
Olimex currently deals with a variety of customers for products, and therefore our arrangement with the user
is not exclusive. Olimex assumes no liability for applications assistance, customer product design, software
performance, or infringement of patents or services described herein.

THERE IS NO WARRANTY FOR THE DESIGN MATERIALS AND THE
COMPONENTS USED TO CREATE OLINUXINO. THEY ARE CONSIDEREDSUITABLE ONLY FOR OLINUXINO.

Page 2 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

Table of Contents
DISCLAIMER............................................................................................................. 2
CHAPTER 1: OVERVIEW........................................................................................5
1. Introduction to the chapter.......................................................................................................5
1.1 Features.....................................................................................................................................5
1.2 The OLinuXino family............................................................................................................ 6
1.2 Target market and purpose of the board.............................................................................. 6
1.3 Organization.............................................................................................................................7

CHAPTER 2: SETTING UP THE OLINUXINO BOARD.....................................8
2. Introduction to the chapter.......................................................................................................8
2.1 Electrostatic warning...............................................................................................................8
2.3 Requirements........................................................................................................................... 8
2.4 Powering the board..................................................................................................................9
2.5 Prebuilt software....................................................................................................................10
2.6 Using BitBurner.....................................................................................................................10
2.7 Building the Linux image......................................................................................................12
2.8 How to blink the LED............................................................................................................14
2.8 How setup the I2C, SPI, UART............................................................................................15
2.9 How to setup Arch-Linux distribution ................................................................................15
2.10 How to use a custom Wi-Fi dongle based on RealTek RTL8188CUS and RTL8192CU
under ARCH Linux.....................................................................................................................19

CHAPTER 3: OLINUXINO BOARD DESCRIPTION.........................................25
3. Introduction to the chapter.....................................................................................................25
3.1 Layout (top view)...................................................................................................................25

CHAPTER 4: THE iMX233 MICROCONTROLLER......................................... 26
4. Introduction to the chapter.....................................................................................................26
4.1 The microcontroller...............................................................................................................26

CHAPTER 5: CONTROL CIRCUITY................................................................... 30
5. Introduction to the chapter.....................................................................................................30
5.1 Reset........................................................................................................................................30
5.2 Clocks......................................................................................................................................30
5.3 Power supply circuit..............................................................................................................30

CHAPTER 6: CONNECTORS AND PINOUT......................................................33
6. Introduction to the chapter.....................................................................................................33
6.1 Debugging interfaces............................................................................................................. 33
6.1.1 UART debug........................................................................................................................34
6.1.2 SJTAG debug...................................................................................................................... 34
6.1.3 Classic JTAG debug........................................................................................................... 35
Page 3 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

6.2 SD/MMC slot..........................................................................................................................37
6.3 UEXT module.........................................................................................................................38
6.4 GPIO (General Purpose Input/Output) 40pin connector .................................................39
6.5 USB HOSTs............................................................................................................................43
6.6 LAN connector.......................................................................................................................44
6.7 PWR Jack...............................................................................................................................44
6.8 Headphones and line-in connector....................................................................................... 45
6.9 Battery connector...................................................................................................................46
6.10 Composite video connector................................................................................................. 46
6.11 Boot mode positions.............................................................................................................47
6.12 Jumper description..............................................................................................................48
6.12.1 SCL_SW/SCL_HW and SDA_SW/SDA_HW................................................................48
6.12.2 5V_E...................................................................................................................................49
6.12.3 3.3V_E and 3.3VIO_E jumpers.......................................................................................49
6.12.4 Boot mode selecting jumpers........................................................................................... 49
6.13 Additional hardware components...................................................................................... 50
6.14 Accessories............................................................................................................................50
6.14.1 USB-SERIAL-CABLE-F..................................................................................................50

CHAPTER 7: BLOCK DIAGRAM AND MEMORY........................................... 51
7. Introduction to the chapter.....................................................................................................51
7.1 Memory addresses................................................................................................................. 51
7.2 Processor block diagram.......................................................................................................52
7.3 Physical memory map........................................................................................................... 53

CHAPTER 8: SCHEMATICS..................................................................................54
8. Introduction to the chapter.....................................................................................................54
8.1 Eagle schematic......................................................................................................................54
8.2 Physical dimensions...............................................................................................................56

CHAPTER 9: REVISION HISTORY AND SUPPORT........................................ 57
9. Introduction to the chapter.....................................................................................................57
9.1 Document revision................................................................................................................. 57
9.2 Board revision........................................................................................................................ 59
9.3 Useful web links and purchase codes................................................................................... 59
9.3 Product support..................................................................................................................... 61

Page 4 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

CHAPTER 1: OVERVIEW
1. Introduction to the chapter
Thank you for choosing the OLinuXino single board computer from Olimex! This document
provides a user’s guide for the Olimex OLinuXino board. As an overview, this chapter gives thescope of this document and lists the board’s features. The differences between the members of the
OLinuXino family are mentioned. The document’s organization is then detailed.
The OLinuXino development board enables code development of applications running on the
microcontroller i.MX233, manufactured by FreeScale Semiconductor.
OLinuXino is an open-source, open-hardware project and all documentation is available to thecustomer.

1.1 Features••

iMX233 ARM926J processor at 454Mhz
64 MB RAM••

SD-card connector for booting the Linux image
TV PAL/NTSC video output••

3 USB High Speed Hostoptional WIFI RTL8188CU module••

Stereo Audio Input
Stereo Headphones Audio Output••

two Buttons
UEXT connector for connection of different peripherial modules••

40 pin GPIO for connection of other hardware
Board is in shape for fit inside Pactec JM42 plastic box
http://www.pactecenclosures.com/pdfs/drw_JM-42.pdf••

Power supply input 6-16VDC
PCB dimensions: 3.70'' x 2.15'' (94.0mm x 54.6mm)•

Nominal dimensions: 3.70'' x 2.65'' (94.0mm x 67.3mm)

Page 5 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

1.2 The OLinuXino family
Table of comparison
OLinuXino-MICRO

OLinuXino-MINI

OLinuXino-MAXI

Processor

iMX233 @ 454Mhz

iMX233 @ 454Mhz

iMX233 @ 454Mhz

Ram [MB]

64

64

64

# USB hosts

1

3

2

100/150 Mbit
Ethernet*

No/WIFI option**

No/WIFI option***

Yes/WIFI option**

GPIO connector

60pins40pins40pins# Buttons

3

2

2

Reset button

Yes

Yes

Yes

DC power supply

5V

5V-16V

5V-16V

Dimensions

3.40'' x 1.70''

3.70'' x 2.65''

3.70'' x 2.65''

Breadboarding

Yes

No

No

Audio IN connector

No

Yes

Yes

Audio OUT connector No

Yes

Yes

UEXT connector

Yes

Yes

No

* 100Mbit Ethernet for the wired network of OLinuXino-MAXI. 150Mbit for the WIFI following
811.02n standard.
** All three boards have the option to work with MOD-WIFI_RTL8188, which is USB WIFI
modem with RTL8188CU chip and can be purchased separately. MOD-WIFI_RTL8188 can beconnected to any of the OLinuXino boards via the USB.
*** OLinuXino-MINI has additional option of having RTL8188CU hardware mounted! If you wish
RTL8188CU embedded in the device you should purchase OLinuXino-MINI-WIFI. Choosing theembedded WIFI option will leave your USB-HOSTs available for use.

1.2 Target market and purpose of the board
The boards from the OLinuXino family are ready to use, easy to setup and are suitable for
embedded programming enthusiasts, Linux hobbyists, gadget fans and also professionals (since its
low cost makes it very good solution for application orientated embedded systems). The main usageof the board is software embedded development without the urge of understanding perfectly the
hardware.

Page 6 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

The strong points of the boards are the processor speed, the mobility of the board and the low price.
Customers have full access to the technical documentation of the board. The software is released
under General Purpose License and the board is considered open-hardware.

1.3 Organization
Each section in this document covers a separate topic, organized as follow:––

Chapter 1 is an overview of the board usage and features
Chapter 2 provides a guide for quickly setting up the board and software notes––

Chapter 3 contains the general board diagram and layout
Chapter 4 describes the component that is the heart of the board: the iMX233
microcontroller––

Chapter 5 is an explanation of the control circuitry associated with the microcontroller toreset. Also shows the clocks on the board
Chapter 6 covers the connector pinout, peripherals and jumper description––

Chapter 7 shows the memory map
Chapter 8 provides the schematics–

Chapter 9 contains the revision history, useful links and support information

Page 7 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

CHAPTER 2: SETTING UP THE OLINUXINO BOARD
2. Introduction to the chapter
This section helps you set up the OLinuXino development board for the first time. Please consider
first the electrostatic warning to avoid damaging the board, then discover the hardware and software
required to operate the board.
The procedure to power up the board is given, and a description of the default board behavior isdetailed.

2.1 Electrostatic warning
OLinuXino is shipped in a protective anti-static package. The board must not be exposed to highelectrostatic potentials. A grounding strap or similar protective device should be worn whenhandling the board. Avoid touching the component pins or any other metallic element.

2.3 Requirements
In order to set up the OLinuXino optimally, the following items are required:- 6V to 16V source of power with 1A maximum amperage.
- SJTAG interface programmer- USB keyboard- Monitor with composite interface or Personal Computer + USB-SERIAL-CABLE- SD card with Linux image
Note that the board arrives without SD card or Linux image. You can purchase a card with Linux
separately. It is recommended that the user has basic Linux experience.
Some of the suggested items can be purchased by Olimex, for instance:
iMX233-OLinuXino-SD - SD card with the Linux image
USB-SERIAL-CABLE-F - USB serial console cable female (check “6.1.1 UART Debug” for info
how to connect it to the board)
SY0612E - power supply adapter 12V/0.5A for iMX233-OLinuXino-Maxi

Page 8 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

2.4 Powering the board
The board is powered either via the PWR jack or via a battery. It should be supplied from a 6V to
16V source with maximum current of 1A from the power jack.
All measures below are taken at 10V.
If measuring the current consumption it should be around 0.06A before initializing all the
peripherals. The consumption raises to 0.12A without LAN and USB hosts initialized and Linuxrunning. The consumption goes up 0.15A with the Linux running when LAN and both USB hosts
initialized.
If you have a standard USB flash drive attached to a USB host, Linux and LAN running the typicalconsumption is around 0.20A.
When powered by the typical 3.7V battery the LAN and USB-hosts will be powered-off if you use
the external 3.3V DC-DC (they will stil work if using the internal in the processor DC-DC). The
consumption from the battery when Linux is running is around 0.75A.
IMPORTANT! We discovered a situation which might leave some of the SD cards (iMX233OLinuXino-SD) in unrecoverable state when powering OLinuXino-MICRO. The problem
might occur if two specific conditions are met simultaneously:
1)Plugged iMX233-OLinuXino-SD micro SD card with holographic sticker on its back side(some of the cards we have distributed are from a brand that places holographic sticker on
their backs, the other half lack such a sticker)
2)Plugged USB-SERIAL-CABLE-F at the moment when powering the board
If you happen to have received SD card with holographic sticker on its back side and you use
it with OLinuXino-MICRO and you plug USB-SERIAL-CABLE and then you power theboard there is a chance of malfunction of the SD card.
There are two possible workarounds to protect the SD card. The first one is simpler and thesecond one requires some soldering experience.
Workaround 1: First insert the iMX233-OLinuXino-SD card and then power the board (andif powering the board from a battery also press the PWR button). Wait 4-5 seconds and thenconnect the USB-SERIAL-CABLE-F. After the initial power-up it is safe to use the reset
button.
Workaround 2: You will need a Shottky diode. The Shottky should be soldered on the USBPage 9 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

SERIAL-CABLE-F TX line/wire (RED cable) with anode towards the board.
When you power the board by battery you have to press the PWR_BUT to start the board.
If you start Linux and it is already running no matter which powering method you use(PWR_JACK or BAT) pressing the PWR_BUT will put the Linux in power-save mode.
When you power the board by battery you have to press the PWR_BUT to start the board.
If you start Linux and it is already running no matter which powering method you use(PWR_JACK or BAT) pressing the PWR_BUT will put the Linux in power-save mode.
For the European customers we sell a power supply adapter 12V/0.5A - SY0612E.

2.5 Prebuilt software
Note that the boards arrive without Linux or SD card. The Linux image can be purchased
separately on a SD card or you can built and adjust it yourself.
When we program the boards we change the default position of the following HW_OCOTP_ROM0
fuses of the processor:
SD_MBR_BOOT(3) - Blown
SD_POWER_GATE_GPIO(21:20) – 10-PWM3
For burning the fuse position we use the BitBurner software. This operation is discussed in details
before. Proceed with great caution when burning fuses since it is irreversible operation.
The first batches of the board and the SD-card used the Debian Linux image. After that we switchedover to ArchLinux for the ease of the package manager. Instructions how to build the ArchLinuxcan be found at the gitHub address of OLinuXino.

2.6 Using BitBurner
IMPORTANT! MODIFYING THE FUSES IS IRREVERSIBLE PROCESS! BURNING THE
WRONG FUSES MIGHT DAMAGE OLINUXINO IRREVERSIBLY! BURNING WRONGFUSES MIGHT CAUSE BOOT PROBLEMS!
BURN FUSES AT OWN RISK!

Page 10 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

The bit burning is done via the USB of the computer connected to the OLINUXINO board and the
BitBurner software. To be able to burn the fuses you will need to make a custom cable that connects
a USB with the 3 pin holes found at the bottom of the board named “GND”, “DP”, “DM” (checkthe picture below for a better view how the three wires must be connected.

After soldering the three wires you can place a marker on each of them or use colored wires to beable to distinguish them. You can also use some gel to keep them tight on the USB connector. On
the opposite side of the cables you might place 50mil (1.27mm) male connector following the orderof the signals. Please also restrain from using wires longer than 20 cm since that might make theconnection unreliable.
Download BitBurner from https://www.olimex.com/dev/OLINUXINO/iMX233OLINUXINO/BitBurner.v1.0.4.6.zip. Extract it and start the .exe. If you connect everything you
should see and choose HID-compilant device from the “Select device” drop-down menu.

Page 11 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

2.7 Building the Linux image
Note that building the Linux image from scratch is a time-consuming task. Even with powerfulmachine and fast internet connection it might take few hours compiling. Some Linux distributions
might lack the tools required to compile/build/execute scripts/download from repository – how to
get those is not discussed below.
The Linux image is created and downloaded from https://github.com/Freescale/fsl-community-bspplatform. For the test here we used Debian 6.0 with GNOME visual libraries. The steps we did:
1) From the terminal created folder “bin” in home folder:
user@dist$: mkdir bin
user@dist$: cd bin

Add bin directory to PATH in order to do the next steps easier. Else navigate to the right folders.
2) Installed `repo` utility needed for the bitbake file fetching from the repository:

Page 12 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

user@dist$: curl https://dl-ssl.google.com/dl/googlesource/git-repo/repo > ~/bin/repo
user@dist$: chmod a+x ~/bin/repo

3) Created directory for the project and download the BSP source from the git repository:
user@dist$: mkdir fsl-community-bsp
user@dist$: cd fsl-community-bsp~/fsl-community-bsp$: repo init -u https://github.com/Freescale/fsl-community-bsp-platform -b
denzil~/fsl-community-bsp$: repo sync

4) You can change the settings for the build if you want at fsl-community-bsp/build/conf/local.conf.
I changed the “machine” name to “imx233-olinuxino-maxi”.
For Linux kernel configurations and settings you can do (of course you can use also the default
settings):~/fsl-community-bsp$:. ./setup-environment build~/fsl-community-bsp/build$:bitbake linux-imx -c menuconfig

Check the image below:

5) Now to start building the image:

Page 13 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual~fsl-community-bsp$:. ./setup-environment build~fsl-community-bsp/build $: bitbake core-image-minimal

Note: on different Linux distributions you might have different tools installed and you will probably
need to install dependencies needed for the compile/build scripts. Here are some (but not all) of themandatory ones: G++; diffstat; texi2html; chrpath; gawk; texinfo; some git client.
To ensure you have the latest version supported with all the updates visit
https://github.com/OLIMEX/OLINUXINO and https://github.com/Freescale/fsl-community-bspplatform.

2.8 How to blink the LED
In this sub-chapter you will find a way to achieve the most basic task in electronics – the “Hello
World” of electronics - blinking the LED.
First we set the pin responsible for the LED as an output and we can set its value manually to highor low position – make it blink manually. The LED mounted on the board uses GPIO65. You can
use external diode instead of the one mounted - you have to look at the table “The Linux
implementation of pins” in the hardware section to get the correct linux name for the GPIO pin.
echo out > /sys/class/gpio/gpio65/direction
echo 1 > /sys/class/gpio/gpio65/value

If you want to set the blink off you should change the value on the second line to:echo 0 > /sys/class/gpio/gpio65/value

To show the info for all GPIOs:
ls /sys/class/gpio

To make it turn on – turn off automatically (e.g. blink) we use the text redactor VI to write theLinux script:
echo out > /sys/class/gpio/gpio65/direction
while truedoecho 1 > /sys/class/gpio/gpio65/value
sleep 1echo 0 > /sys/class/gpio/gpio65/value
sleep 1
done

Page 14 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

We save it as as “gpio” and we make it executable withchmod +x gpio

then we execut the script with:./gpio

The LED should start blinking with 0.5Hz.

2.8 How setup the I2C, SPI, UART
Good place to check if you are trying to configure the I2C, SPI, UART etc via Linux is
http://www.inf.furb.br/~maw/asm51/Telit_GE863-PRO3_Linux_SW_UserGuide_r5.pdf. Telit have
explained how to do it with their board but it follows the same pattern for OLinuXino.
Another way to test I2C is using the i2c-tools utility (), which is available in OpenEmbedded.

NOTE that to use hardware I2C you have to set the SMD jumpers to the proper side.

For SPI you can use spidev tool:
Git link(click), check the spidev_test.c code for an example.

2.9 How to setup Arch-Linux distribution
This is a step-by-step guide for building the Archlinux image for Olimex OLinuXino-MAXI. The
second and the third part of the document explain how to setup the internet connection on the board
and how to use the GCC compiler to compile „HelloWorld“ example on the OLinuXino.
Two important preparations:1)You have to download the latest software package from the GitHub of iMX233-OLinuXino,
down in the code you will meet “xxxxxxx” which you will have to replace with the correct
locations in the package.
2)When trying I2C examples I2C jumpers has to be configured for hardware I2C mode.
Page 15 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

I. How to create SD-card with Archlinux image
1. Download the image files from: xxxxxxx . Put the files in desired folder, for example/home/User/Archlinux.
2. Insert the card-reader into the Linux host machine.
IMPORTANT NOTE - this example is given with "sdb1 and sdb2" devices but it could enumerate
differently on your host, so confirm what it enumerates as before running fdisk!
3. Unmount the card-reader:& sudo umounth /dev/sdb1
4. Format the SD-card using fdisk:& sudo fdisk /dev/sdb
5. With the help of the menu create two partitions. The steps are the following:
5.1. Type “p” to view existing partitions on the SD-card
5.2. Type “d” to delete all partitions
5.3. Type “n” to create new one
5.4. Set “1” as partition number
5.5. Type “p” to select primary partition
5.6. Press Enter to select default beginning sector
5.7. Type “+32M” to create 32MB partition
5.8. Type “t” to change partition type5.9. Type “53”5.10. Type “n” to create another partition
5.11. Set “2” as partition number
5.12. Type “p” to set partition as primary
5.13. Press Enter to set default size of the partition
5.14. Type “w” to write partitions to the SD-card
6. Create the second partition with ext3 file system:& sudo mkfs.ext3 /dev/sdb2
7. Mount the second partition:& sudo mount /dev/sdb2 /mnt/mmc
If you don't have mountpoint you should create one. Just type:sudo mkdir /mnt/dir
8. Login as root for the next operations:& sudo su

Page 16 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

IMPORTANT NOTE: It is necessary to log-in as root, not as super-user!
9. Extract the downloaded tarball into the second partitions:& tar -xzf /home/User/Archlinux/xxxxx.tar.gz
10. The next step is to to write the bootloader and kernel image to the first partition.
& dd if=/Archlinux/xxxxx.img of=/dev/sdb1 ibs=512 seek=4 conv=sync,notrunc
11. Unmount the SD-card, it should be ready for use.
& cd
& umount /dev/sdb2
12. Download the new kernel patch from: xxxxxxxxxxxxxxxxxxxx
13. Put the file in USB flash drive. Insert the flash drive into OLinuXino board.
& mount /dev/sdc1 /mnt/usb& cp -fv /home/User/Downloads/<file> /mnt/usb& umount /mnt/usb
Again this is example. You should correct this commands with your paths and corresponding
devices.
IMPORTANT NOTE: The following commands are entered into OLinuXino terminal.
14. Mount the flash drive& mount /dev/sdb1 /mnt/usb
15. Run pacman to update the kernel:& pacman -S /mnt/usb/kernel26-olinuxino-2.6.35.3-6-arm.pkg.tar.xz
16. Follow the instructions. Just type “y” when promted.
17. Reboot
IMPORTANT NOTE: If you are connected to internet, you can use the following command:& pacman -U http://xxxxxxx.tar.xz.
Using this you can skip the part with the USB flash drive. Using the same command you could
download different packages:& pacman -Sy <package name>
II. Set up the internet
This is a working example, but you might wish to read some additional information, if thisdoesn't work for you.
With every reboot the device is assigned with different MAC address. To change this use
Page 17 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

the commands:& ip link set dev usb0 down
& ip link set dev usb0 address aa:bb:cc:dd:ee:ff& ip link set dev usb0 up
To set an IP address enter:& ifconfig usb0 192.168.0.249
or whatever address you want.
After that add default gateway:
route add default gw 192.168.0.1 usb0
Finally you should add DNS-server. You should modify /etc/resolv.conf with vi, or otherprogram. For example:& vi /etc/resolv.conf
Press d several times to remove all lines. Press I to enter insert mode. Type:& nameserver 192.168.0.1(Again this is example. You should add you DNS-server.)After you finish entering this press Esc. This will set the program in command mode. In
command mode press:& :wq
This should do the work. To check connection use ping. If it doesn't check yourconfiguration again and router settings. You can use ifconfig to see OLinuXino settings.
III. Using GCC to make Hello_WorldIn the home folder there are some examples& cd /home/examples& ls
And you should see all files and folders. You can create new folder (if you want) with thecommand:& mkdir <some dir>To see our HelloWorld program go to /HelloWorld folder& cd /home/examples/HelloWorld& ls
In this folder are two files:- hello- hello_world.c
The C file is the sourse code. Actually this is text file with .c extention. Type vi or cat
hello_world.c to view the source. You could modify the source whatever you want. Afterthe source is ready to compile the file use:
Page 18 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual& gcc -o hello_world.c hello
For more complicated compiling type:& man gcc
To execute the program:& ./hello <some name>
The result of the execution should be:
Hello <some name>.
In the other directory /home/i2c are three examples for hardware I2C. You could
compile them using the same command:& gcc -o <file>.c <file>
After execution you could see the I2C working using osciloscope connected to thecorresponding GPIOs.
You can see that the LED1 on the board is blinking. This is a backgrond shell process.
Again in the /home you can see a third folder led_blink. In this one there is a file
led_blink. Type:& cat led_blink
You can see that this is shell script. To execute this script every time the linux is loaded thepath should be added to the file rc.local.
& vi /etc/rc.local
Add the path to the script file:/home/examples/led_blink/led_blink &The "&" means that the script will be running in background.

2.10 How to use a custom Wi-Fi dongle based on RealTek RTL8188CUS and
RTL8192CU under ARCH LinuxThis procedure was done on the Olinuxino-Maxi. It was connected with a wired ethernet during theprocedure. Once the WiFi is functional, the wired ethernet can be removed. The microSD card canthen be moved to another Olinuxino board such as the Micro.
Log into the Olinuxino board.
upgrade the system:
Page 19 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manualpacman -Syu
Then install development tools
pacman -S base-devel
Delete empty directories:
rmdir /usr/lib/modules/2.6.35-6-ARCH+/build
rmdir /usr/lib/modules/2.6.35-6-ARCH+/source
Install kernel source:
pacman -S kernel26-headers-olinuxino
Get the Realtek drivers from the Realtek web site:
http://www.realtek.com.tw/downloads/downloadsView.aspx?
Langid=1&PFid=48&Level=5&Conn=4&ProdID=277&DownTypeID=3&GetDown=false&Downl
oads=true
I downloaded RTL8188CUS (the one showing up on lsusb)
If you choose RTL8192CU you get the same file
The file comes as a zip file:
RTL819xCU _USB_linux_v3.4.3_4369.20120622.zipAssume you downloaded it to your workstation.
Unzip the file.
Inside there is a folder called driver with a file inside called:
rtl8188C_8192C_usb_linux_v3.4.3_4369.20120622.tar.gz
Copy that file to the Olinuxino target:
scp rtl8188C_8192C_usb_linux_v3.4.3_4369.20120622.tar.gz root@ip_addr_of_Olinuxino:/root
log into Olinuxino
cd /root
mkdir driver
mv rtl8188C_8192C_usb_linux_v3.4.3_4369.20120622.tar.gz driver
cd drivertar xzf rtl8188C_8192C_usb_linux_v3.4.3_4369.20120622.tar.gz
cd rtl8188C_8192C_usb_linux_v3.4.3_4369.20120622
vi Makefile
Page 20 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

Change the line:
CONFIG_PLATFORM_I386_PC = yto
CONFIG_PLATFORM_I386_PC = n
Below it add the line:
CONFIG_PLATFORM_ARM_iMX233 = yfind the block:--------------------------------------------------------ifeq ($(CONFIG_PLATFORM_ARM_PXA2XX), y)
EXTRA_CFLAGS += -DCONFIG_LITTLE_ENDIAN
ARCH := arm
CROSS_COMPILE := arm-none-linux-gnueabiKVER := 2.6.34.1
KSRC ?= /usr/src/linux-2.6.34.1
endif--------------------------------------------------------Below it adds the block:--------------------------------------------------------ifeq ($(CONFIG_PLATFORM_ARM_iMX233), y)
EXTRA_CFLAGS += -DCONFIG_LITTLE_ENDIAN
ARCH := arm
CROSS_COMPILE := /usr/bin/
KVER := KVER := 2.6.35-6-ARCH+
KSRC ?= /usr/src/linux-2.6.35-6-ARCH+
MODDESTDIR := /usr/lib/modules/2.6.35-6-ARCH+/kernel/drivers/net/wireless/rtl818x
endif--------------------------------------------------------Save and exit::wq
make clean
makermmod 8192cu.ko (not really needed)
insmod 8192cu.komake install
Page 21 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

Verify that the driver has been installed:[root@alarm wireless]# ls -l /sys/class/net
total 0drwxr-xr-x 4 root root 0 Aug 14 16:55 lo
drwxr-xr-x 4 root root 0 Aug 14 16:55 usb0
drwxr-xr-x 5 root root 0 Aug 14 16:43 wlan0
wlan0 is the new driver
rebootMake sure you can see both usb0 (ethernet) and wlan0 on all the following:
ifconfigls -l /sys/class/net
iwconfig
you may need to bring the interface up manually:
ip link set wlan0 up
scan for access points:
iwlist wlan0 scan
cp /etc/wpa_supplicant/wpa_supplicant.conf /etc/wpa_supplicant/wpa_supplicant.conf.original
wpa_passphrase myssid "my_secret_passkey" > /etc/wpa_supplicant/wpa_supplicant.conf
Associate with access point according to the encryption type:
Encryption
Command
No Encryption
iwconfig wlan0 essid "linksys"
WEP w/ Hex Key
iwconfig wlan0 essid "linksys" key "0241baf34c"
WEP w/ ASCII passphrase iwconfig wlan0 essid "linksys" key "s:pass1"
WPA
wpa_supplicant -B -Dwext -i wlan0 -c /etc/wpa_supplicant/wpa_supplicant.conf
Verify association:
iwconfig wlan0
Assign IP address:
dhcpcd wlan0(dhcp)
Page 22 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manualor(static)
ip addr add 192.168.0.2/24 dev wlan0
ip route add default via 192.168.0.1------------------------------------------------To set up automatically at boot:pacman -S netcfg
pacman -S wpa_actiond
pacman -S ifplugd
cp /etc/network.d/examples/wireless-wpa /etc/network.d/my_wifi_network
cp /etc/network.d/examples/ethernet-dhcp /etc/network.d/my_eth_network
vi /etc/network.d/my_wifi_network
configure all parameters
vi /etc/network.d/my_eth_network
configure all parameters (make sure you change eth0 to usb0)
You can have multiple profiles (e.g. for roaming, etc.)
To manually connect a profile:netcfg my_wifi_network
To manually disconnect a profile:netcfg down my_wifi_network
There are 3 daemon options for configuring networks at boot time.
1. network -- the original setting. don't use that since we're using netcfg
2. net-profilesor
3. net-auto-wireless and net-auto-wired
This procedure is using the last option.
vi /etc/rc.conf
Look for DAEMONS=(..)
delete network and add:
net-auto-wireless and net-auto-wired
vi /etc/conf.d/netcfg
Page 23 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

Change to: NETWORK=(@my_wifi_network @my_eth_network)
Make sure you have the correct names for WIRED_INTERFACE and WIRELESS_INTERFACE(change eth0 to usb0)------------------------------------------------Also see:https://wiki.archlinux.org/index.php/Beginners'_Guide#Setup_wireless_networkhttps://wiki.archlinux.org/index.php/Wireless_Setup#Getting_an_IP_address
https://wiki.archlinux.org/index.php/Netcfg
Other commands:
ip link show wlan0

Page 24 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

CHAPTER 3: OLINUXINO BOARD DESCRIPTION
3. Introduction to the chapter
Here you get acquainted with the main parts of the board. Note the names used on the board might
differ from the names used below to describe them. For the actual names check the OLinuXino
board itself.

3.1 Layout (top view)

Page 25 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

CHAPTER 4: THE iMX233 MICROCONTROLLER
4. Introduction to the chapter
In this chapter is located the information about the heart of OLinuXino – its microcontroller. The
information is a modified version of the datasheet provided by its manufacturers.

4.1 The microcontroller
 ARM926 CPU Running at 454 MHz
 Integrated ARM926EJ-S CP
 16-Kbyte data cache and 16-Kbyte instruction cache— One-wire JTAG interface— Resistor-less boot mode selection using integrated OTP values
 32Kbytes of Integrated Low-Power On-Chip RAM
 64 Kbytes of Integrated Mask-Programmable On-Chip ROM
 1 Kbit of On-Chip One-Time-Programmable (OCOTP) ROM
 Universal Serial Bus (USB) High-Speed (Up to 480 Mb/s), Full-Speed (Up to 12 Mb/s)— Full-speed/high-speed USB device and host functions— Fully integrated full-speed/high-speed Physical Layer Protocol (PHY)— Mass storage host-capable (uncertified by USB-IF)
 Power Management Unit
— Single inductor DC-DC switched converter with multi-channel output supporting Li-Ion
batteries.
— Features multi-channel outputs for VDDIO (3.3 V), VDDD (1.2 V), VDDA (1.8 V),
VDDM (2.5V) and regulated 4.2V source.
— Direct power from 5-V source (USB, wall power, or other source), with programmablecurrent limits for load and battery charge circuits.
— Silicon speed and temperature sensors enable adaptive power management overtemperature and silicon process.
 Audio Codec— Stereo headphone DAC with 99 dB SNR— Stereo ADC with 85 dB SNR— Stereo headphone amplifier with short-circuit protection and direct drive to eliminate
bulky capacitors— Amplifiers are designed for click/pop free operation.

Page 26 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual— Two stereo line inputs— Microphone input— SPDIF digital out 16-Channel Low-Resolution ADC— 6 independent channels and 10 dedicated channels— Resistive touchscreen controller— Temperature sensor controller— Absolute accuracy of 1.3%
 Security Features— Read-only unique ID for digital rights management algorithms— Secure boot using 128-bit AES hardware decryption— SHA-1 hashing hardware— Customer-programmed (OTP) 128 bit AES key is never visible to software.
 External Memory Interface (EMI)— Provides memory-mapped (load/store) access to external memories— Supports the following types DRAM:— 1.8V Mobile DDR— Standard 2.5V DDR1
 Wide Assortment of External Media Interfaces— High-speed MMC, secure digital (SD)— Hardware Reed-Solomon Error Correction Code (ECC) engine offers industry-leading
protection and performance for NANDs.
— Hardware BCH ECC engine allowing for up to 20-bit correction and programmableredundant area.
 Dual Peripheral Bus Bridges with 18 DMA Channels— Multiple peripheral clock domains save power while optimizing performance.
— Direct Memory Access (DMA) with sophisticated linked DMA command architecturesaves power and off-loads the CPU.
 Highly Flexible Display Controller— 8-bit data ITU-R BT.656 D1 digital video stream output mode (PAL/NTSC), with onthefly RGB to YCbCr color-space-conversion.
— Flexible input formats
 Pixel Processing Pipeline (PXP)— Provides full path from color-space conversion, scaling, alpha-blending to rotation
without intermediate memory access— Bi-linear scaling algorithm with cropping and letterboxing— Alpha-blend, BITBLT, color-keying— Memory efficient block-based rotation engine

Page 27 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual Integrated TV-Out Support— Integrated PAL/NTSC TV-encoder fully pipelined to display controller’s D1 resolution
output stream— Integrated low-power 10-bit Video DAC (VDAC) for composite analog video output.
 Data Co-Processor (DCP)— AES 128-bit encryption/decryption— SHA-1 hashing— High-speed memory copy
 Three Universal Asynchronous Receiver-Transmitters (UARTs)— Two high-speed application UARTs operating up to 3.25 Mb/s with hardware flow
control and dual DMA.
— Debug UART operates at up to 115Kb/s using programmed I/O.
 I2C Master/Slave— DMA control of an entire EEPROM or other device read/write transaction without CPUintervention
 Dual Synchronous Serial Ports (for SPI, MMC, SDIO, Triflash)— 1-bit, 4-bit and 8-bit MMC/SD/SDIO modes— Compliant with SDIO Rev. 2.0— SPI with single, dual and quad modes.
 Four-Channel 16-Bit Timer with Rotary Decoder
 Five-Channel Pulse Width Modulator (PWM)
 Real-Time Clock— Alarm clock can turn the system on.
— Uses the existing 24-MHz XTAL for low cost or optional low power crystal (32.768 kHz
or 32.0 kHz), customer-selectable via OTP.
 Customer-Programmable One-Time-Programmable (OTP) ROM via Integrated eFuse Block— Resistor-less boot mode selection— 128-bit boot mode crypto key— Boot mode specification of NAND characteristics for device that the customer issoldering to the board. This means no more costly delays waiting for new device support in t
he boot ROM.
— Fully software-programmable and accessible
 Flexible I/O Pins
— All digital pins have drive-strength controls— Most non-EMI digital pins have general-purpose input/output (GPIO) mode.
For comprehensive information on the microcontroller visit the Freescale’s web page for adatasheet.

Page 28 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

At the moment of writing the microcontroller datasheet can be found at the following link:
http://www.freescale.com/files/dsp/doc/ref_manual/IMX23RM.pdf

Page 29 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

CHAPTER 5: CONTROL CIRCUITY
5. Introduction to the chapter
Here you can find information about reset circuit and quartz crystals locations, the power supply
circuit is discussed.

5.1 Reset
OLinuXino's reset circuit includes R9 (47KΩ), R10 (47 Ω), T1, T2, Q1 and a RESET button. The
RESET is specific for the fact that it is accomplished when the quartz is disconnected using 3.3V
and the transistors T1 and T2.

5.2 Clocks
24 MHz quartz crystal Q1 is connected to pins 121 and 122 of the iMX233 processor.
25 MHz quartz crystal Q2 is found at pins 60 and 61 of the Ethernet controller – LAN9512-JZX.

5.3 Power supply circuit
The power supply circuit of OLinuXino-MAXI allows flexible input supply from 6V to 16V direct
current. This means a wide range of power supplies, adapters, converters are applicable. The
maximum amperage recommended is 1A by default (0.250mA if 3.3VIO_E is closed – read below).
All measures below are taken at 10V external supply.
Page 30 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

If measuring the current consumption it should be around 0.06A before initializing all the
peripherals. The consumption raises to 0.12A without LAN and USB hosts initialized and Linuxrunning. The consumption goes up 0.15A with the Linux running when LAN and both USB hosts
initialized.
If you have a standard USB flash drive attached to a USB host, Linux and LAN running the typicalconsumption is around 0.20A.
When powered by the typical 3.7V battery the LAN and USB-hosts are disabled. The consumption
when Linux is running is around 0.75A.
The board can be powered either from the power jack or from the LIPO_BAT connector. Note thatsince standard batteries can't provide the voltage needed for the board it is advisable to use thepower from the power jack. When you use the LIPO_BAT connector and a battery the chip
handling the Ethernet and the USB hosts is disabled. Also the power button has alternative function
when the board is powered by a battery – check 6.13.
If you have successfully powered the board the red PWR LED will turn on. Note that it is possible
to have the PWR LED on even if there isn't enough power for proper operation of the board and all
the peripherals currently connected.

Page 31 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

The jumper 5V_E (5V Enable) which is closed by default enables powering the board via the power
supply circuit.
The 3.3V_E (3.3V Enable) jumper when closed enables the 3.3V power line.
Note the 3.3VIO_E jumper which by default is closed – if you open it (cut it) - it disables the U6
DC-DC converter and enables a built-in the iMX233 DC-DC. The problem is that the built-in DCDC has a limit of 250mA of amperage the chip heats a bit so we decided to put external DC-DC for
better stability. When working with 3.3VIO_E closed pay attention to the amperage used.
If 3.3VIO_E is closed(soldered) – it enables the additional DC-DC which is the better solution if
powering the board from external supply. However, if 3.3VIO_E is closed and you power the board
from a battery the LAN and the USB-HOSTs will not receive enough power and will be disabled.

Page 32 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

CHAPTER 6: CONNECTORS AND PINOUT
6. Introduction to the chapter
In this chapter are presented the connectors that can be found on the board all together with their
pinout and notes about them. Jumpers functions are described. Notes and info on specificperipherals are presented. Notes regarding the interfaces are given.

6.1 Debugging interfaces
If you don't have a separate monitor or display around, and you don't wish to swap cables constantlywith your personal computer using the debug interfaces provide better option for you OLinuXino
experience.

There are three debugging options available on the OLinuXino. It is preferable to use one of thefirst two - UART or SJTAG but in case you want to use the classic 6-wire parallel JTAG there is an
option explained below.

Page 33 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

6.1.1 UART debug
The first one is a debug UART interface – U_DEBUG. You can use our USB-SERIAL-CABLE
for debugging via the UART.
In order to avoid SD card malfunction, when using the USB-SERIAL-CABLE-F with
OLinuXino-MAXI it is advisable to first insert the iMX233-OLinuXino-SD card and thenpower the board (if using battery also press the PWR button). Wait 4-5 seconds and thenconnect the USB-SERIAL-CABLE-F.
Please also check “2.4 Powering the board” for detailed info.
Note on how to use the U_DEBUG with USB-SERIAL-CABLE-F which has RED GREEN
BLUE wires GND=BLUE, RX(INPUT)=GREEN, TX(OUTPUT)=RED. You have to connect
to OLinuXino-MAXI U_DEBUG connector in this sequence:
BLUE wire to pin.3 (GND)
GREEN wire to pin.2 (TX)
RED wire to pin.1 (RX)U_DEBUG
Pin #Signal Name

Processor Pin #1

PWM0/DUART_RXD

125

2

PWM1/DUART_TXD

126

3

GND

30, 35, 98, 105, 112, 118

4

DEBUG

84

You can also check the pin names at the bottom of the board under the U_DEBUG header.

6.1.2 SJTAG debug
The second interface is the Serial JTAG (SJTAG) one-wire interface. It works with various external
JTAG debugger dongles through a Freescale-defined FPGA/CPLD. SJTAG supports the Green
Hills Slingshot and ETM probe debugger dongles, as well as those made by ARM, Abatron, andLauterbach.
Page 34 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

Note that the SJTAG interface comes without plastic header mounted.
The HW_DIGCTL_CTRL_USE_SERIAL_JTAG bit in the digital control block selects whether the
one-wire serial JTAG interface or the alternative six-wire parallel JTAG interface is used. There areother options in the digital control block which might interest you and our advice is to check theiMX233's datasheet released by Freescale.
SJTAG
Pin #

Signal Name

Processor Pin #1

3.3VREG-2

GND

30, 35, 98, 105, 112, 118

3

SJTAG_PSW

119

4

DEBUG

84

The pin names are also written at the bottom of the board for your convenience.

6.1.3 Classic JTAG debug
The third option is to use the classic 6-pin parallel JTAG (not including GND and VCC). There arepads left for this option at the bottom of the board under the SD card holder. They are named
individually and framed near a “JTAG” name.
The important thing is that these pins are multiplexed with the SD card signals. In order to use the
6-pin JTAG you will have to stop using the SD card. Note also that the classic JTAG interface
comes without plastic header mounted so in order to use it you will need to use wires forconnection.
Consider the the software settings required to switch from SJTAG to 6-pin JTAG and vice verse
referring to the iMX233 manual. For instance:
The HW_DIGCTL_CTRL_USE_SERIAL_JTAG bit in the digital control block selects whether theserial JTAG interface or the alternative six-wire parallel JTAG interface is used.
HW_DIGCTL_CTRL_USE_SERIAL_JTAG - 0x0 - Selects whether the one-wire serial JTAG
interface or the alternative six-wire parallel JTAG interface is used. 0 = Parallel six-wire JTAG is
Page 35 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manualenabled and is mapped to a collection of module pins that must be enabled by programming theirMUXSEL bits in the pin control block. 1 = Serial JTAG is enabled and uses the dedicated DEBUG
pin. The ROM bootcode writes this field prior to enabling JTAG, selecting which type of JTAG pin
signaling to use. OLD_JTAG = 0x0 Use six-wire parallel JTAG mode. SERIAL_JTAG = 0x1 Use
one-wire serial JTAG mode.
It is good idea to check the datasheet of the iMX233 processor for all the options in the digital
control block. The processor's datasheet should be always the first piece of paper you consult when
dealing with electronics.
Classic JTAG (multiplexed with SD card)Pin #Signal Name

Processor Pin #1

SSP1_DATA1

852

SSP1_DATA0

84

3

GND

30, 35, 98, 105, 112, 118

4

SSP1_SCK

905

SD_VCC-

6

SSP1_CMD

83

7

SSP1_DATA3878

SSP1_DATA286

Notice that the pad numeration is written at the bottom of OLinuXino-MAXI under the microSD
card connector. Please check the manual part for microSD card for a schematic of the pins.

Page 36 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

6.2 SD/MMC slot
The microSD card slot is a standard 8pin connector.
We have tested a number of microSD cards on the OLinuXino boards and all of them worked fineregardless manufacturer or capacity. However, keep in mind that some of the lower quality
microSD cards might draw too much current from the slot which might cause power-state problems.
If you suspect the microSD card is causing problems please try using another one of better quality
for better results.

microSD card connector
Pin #Signal Name

Processor Pin #1

SSP1_DATA2

862

SSP1_DATA3873

SSP1_CMD

83

4

SD_VCC-

5

SSP1_SCK

90

6

GND

30, 35, 98, 105, 112, 118

7

SSP1_DATA0848

SSP1_DATA185

Notice that the pad numeration is written at the bottom of OLinuXino-MAXI under the microSD
Page 37 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manualcard connector.
When removing the card, please make sure that you release it from the connector by pushing andNOT by pulling the card directly (this can damage both the connector and the microSD card).

6.3 UEXT module
OLinuXino board has UEXT connector and can interface Olimex's UEXT modules.
For more information on UEXT please visit:
http://www.olimex.com/dev/OTHER/UEXT.pdf*Note the two jumpers PIN29/SOFT_CL – PIN22/LCD_EN/I2C_SCL, and PIN28/SOFT_SDA3 –PIN21/LCD_HSYNC/I2C_SDA which by default are set to a software SPI. They can be used to set
the whole UEXT to a hardware SPI.

Page 38 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

UEXT connector
Pin #Signal Name

Processor Pin #1+3.3VREG

-

2

GND

30, 35, 98, 105,
112, 118

3

AUART1_TXD

127

4

AUART1_RXD

128

5I2C_SCL34(default) OR 11*

6

I2C_SDA31(default) OR 15*7

PIN9/LCD_D08/SSP2_MISO

22

8

SSP2_MOSI21

9

SSP2_SCK

33

10

PIN12/LCD_D11/UEXT_CS

25

The UEXT pinout is also printed at the bottom of the board under the connector.

6.4 GPIO (General Purpose Input/Output) 40pin connector
The GPIO pins are led out on a separate 40pin connecter. They allow the user to attach additional
hardware, check readings or perform hardware debug. The “GPIO Pin#” column shows connector
number and does NOT represent the naming on the bottom of the board.

Page 39 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

GPIO connector hardware
GPIO
Signal Name
Pin#

Processor pin#

GPIO
Pin#

Signal Name

Processor pin#

1

BAT

103

21

PIN8/LCD_D07

9

2

GND

30, 35, 98,
105, 112, 118

22

PIN27/PWM2

91

3

PIN17/LCD_D16

19

23

PIN7/LCD_D06

8

4

PIN18/LCD_D17/LAN_RES 20

24

PIN28/SOFT_SDA

31

5

PIN16/LCD_D15

28

25

PIN6/LCD_D05

7

6

PIN19/LCD_DOTCLK

17

26

PIN29/SOFT_SCL

34

7

PIN15/LCD_D14

29

27

PIN5/LCD_D04

6

8

PIN20/LCD_VSYNC

16

28

PIN30

81

9

PIN14/LCD_D13

26

29

PIN4/LCD_D03

5

10

PIN21/LCD_HSYNC/
I2C_SDA

15

30

PIN31

82

GPIO
Name
Pin#

Processor pin#

GPIO
Name
Pin#

Processor pin#

11

PIN13/LCD_D12

27

31

PIN3/LCD_D02

4

12

PIN22/LCD_EN/I2C_SCL

1132

PIN32/LRADC1

107

13

PIN12/LCD_D11/UEXT_CS 25

33

PIN2/LCD_D01

3

14

PIN23/LCD_DISP

12

34

PIN33/LRADC0

108

15

PIN11/LCD_D10

24

35

PIN1/LCD_D00

2

16

PIN24/LCD_WR

1336

PIN34/MIC

116

17

PIN10/LCD_D09

23

37+5VUEXT

102

18

PIN25/LCD_RS

1438

3.3VREG-19

PIN9/LCD_D08/
SSP2_MISO

22

39

VIN

-

20

PIN26/LCD_CS

10

40

GND

30, 35, 98,
105, 112, 118

The hardware is associated differently in the Linux following the GPIO naming conventions
suggested in the iMX233 datasheet. You can check the connection between Linux naming of thepin, Olimex naming of the pin and the consecutive connector pin number in the table below. The
Page 40 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

ones filled with “Not implemented” doesn't have Linux support by the time of writing and will be
updated overtime. “Linux GPIO” is the one you should use in Linux (the one in the datasheet);“OLinuXino name” is the pin as written on the bottom of the board. ”OLinuXino GPIO Connector#” is the consecutive number of pins with BAT being Pin#1 and GND#40.
Note that if “OLinuXino Name” starts with P and then is followed by a number X, the PX is thename written on the bottom of the board (under the connector) with white ink. If “OLinuXinoName” is other text it is a signal used for the hardware of the board but still can be controller by theLinux (it can't be found at the GPIO connector though).
The Linux implementation of pins
Linux
GPIO/iMX OLinuXino Name
233 GPIO

OLinuXino GPIO
Connector #Linux
GPIO/iMX
233 GPIO

OLinuXino
Name

OLinuXino GPIO
Connector #

0

PIN9

19

32 to 39

Not
implemented

Not
implemented

1

PIN10

17

51

PIN25

18

2

PIN11

15

52

PIN24

16

3

PIN12

13

53

PIN26

20

4

PIN13

11

55

PIN22

12

5

PIN14

9

56

PIN21

10

6

PIN15

7

64

JTAG_TDO1
SSP1_CMD

Not
implemented

7

PIN16

5

65

LED1

Not
implemented

16

PIN17

3

91

PIN30

28

17

PIN18

4

92

PIN31

30

19

TEST_PAD

Not implemented

20

UEXT_SPI2_MOSI

9

23

PIN29

26

24

UEXT_SPI2_SCK

Not implemented

25

PIN28

24

30

UEXT_TX1

Not implemented

31

UEXT_RX1

Not implemented

Below you can find the GPIO_CON as seen in the schematic:

Page 41 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

When looking at the bottom of OLinuXino-MAXI near the GPIO connector there is also an
additional GND pad named GND_PIN which is a fast way to have access to a ground signal.

Page 42 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

6.5 USB HOSTs
The USB hosts and the Ethernet are controller by a single chip (LAN9512) which handles both
functionality.
The LAN9512 contains a Hi-Speed USB 2.0 hub with two fully-integrated downstream USB 2.0
PHYs, an integrated upstream USB 2.0 PHY, a 10/100 Ethernet MAC/PHY controller, and an
EEPROM controller. It offers SMSC's highest level of USB 2.0 and 10/100 Ethernet complianceand interoperability. Additionally, the LAN9512 devices simplify system design by leveraging theexisting USB stack and reducing the PCB footprint by up to 65% compared to discrete competitive
solutions. USB-based networking technology offers a cost-effective and smart design alternative to
traditional PCI/PCI-Express networking solutions due to the flexibility of routing and placement of
Ethernet and USB connectivity ports.
The big advantage of having USB hosts available over USB devices is that you can use them topower devices.
The signals follow the familiar and standard USB host pattern:
USB 2-level host
PIN#

SIGNAL NAME

1

USB_PWR_A

2

USB_HOST_D-

3

USB_HOST_D+

4

GND

Page 43 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

6.6 LAN connector
The Ethernet connectivity is handled by the LAN9512 controller (which also incorporates a USB
module in it). The signals found on the Ethernet connector are listed in the table below:
LAN connector
PIN#

SIGNAL

NAME

1

TX+

2

TX-

3

VDD

4

NOT CONNECTED

5NOT CONNECTED

6

VDD

7

RX+

8

RX-

The two leds on the front side of the LAN connector show the state of the Ethernet. The meaning
behind the different states can be found in the table below:
LED

Color

Usage

Right

Green

Link status

Left

Yellow

Activity status

6.7 PWR Jack
The power jack used is the typical 2.5mm one used by Olimex in most of our products. You should
provide between 6 and 16 volts @ 1A to the board.

Page 44 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

Pin #Signal Name

1Power Input

2

GND

More info about the power supply can be found in chapter 5 of this manual

6.8 Headphones and line-in connector
Standard audio jack and phone jack are mounted for the audio interfacing.
Headphones/Audio out connector
Pin#

SIGNAL

NAME

Processor Pin#

2

L channel

113

3

R channel

109

5

GND

GND pins

The headphones resistance is 16 Ohms!

Page 45 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

6.9 Battery connector
When using the battery connector keep in mind that it is an energy solution that wouldn't be able topower the board and all the peripherals. The voltage of a 3.7V LIPO battery would be enough topower the processor and the memory but won't be enough to power the LAN and the USB hosts.
Pin #Signal Name

1

VBAT

2

GND

The pins are also written on the top of the board in the base of the connector.

6.10 Composite video connector
The composite video is the connector you should use if you wish OLinuXinoMAXI video output on a monitor.
The whole signal is controlled by pin #104 from the i.MX233 processor.
The + signal is lead to the middle of the connector. The outside part is the GND.

Page 46 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

6.11 Boot mode positions
The iMX233 can boot the operating system from different locations. The default location for theLinux files we used is the microSD card. There are 4(four) jumpers responsible for the bootlocation: D03, D02, D01 and D00. They are located on the top of the board between the processor
and 40pin GPIO connector. Note that the jumpers are SMD type and opening a jumper would
require cutting, closing a jumper would require soldering. To be able to do the quoted operations
you will need basic engineering skills and experience. You can check below the table or theschematic for the correct positions. Value of “1” means the jumper is closed.
BOOT MODE

D03

d02

d01

d00

USB

0

0

0

0

3.3V I2C Master

0

0

0

1

33.3V SPI Flash 1 Master

0

0

1

0

3.3V SPI Flash 2 Master

0

0

1

1

3.3V NAND

0

1

0

0

Start up waits for JTAG
debugger connection

0

1

1

0

3.3V SD/MMC 1 (Default !!!)

1

0

0

1

3.3V SD/MMC 2

1

0

1

0

Page 47 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

6.12 Jumper description
Please note that all the jumpers on the board are SMD type. If you feel insecure of yoursoldering/cutting technique it is better not to try to adjust the jumpers.

6.12.1 SCL_SW/SCL_HW and SDA_SW/SDA_HW
Those two jumpers must be moved together – there are two available options – configuringsoftware I2C interface (SCL_SW, SDA_SW) or hardware I2C interface (SCL_HW, SDA_HW
positions).
You have to set these jumpers to the SCL_HW and SDA_HW positions if using some of our
examples on the web. They require hardware I2C.
Page 48 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

The default position is SCL_SW/SDA_SW

6.12.2 5V_E
The 5V_E jumper allows control over the powering line. If you want to disable the 5V powering
line open 5V_E jumper.
The default position is closed.

6.12.3 3.3V_E and 3.3VIO_E jumpers
Important these jumpers must be moved together! Closing both of 3.3V_E and 3.3VIO_E atthe same time will damage the processor. One of them has to be open (unsoldered/cut). There
are two possible positions:
1) 3.3V_E closed (soldered), 3.3VIO_E open (unsoldered/cut)
2) 3.3V_E open (unsoldered/cut), 3.3VIO_E closed (soldered)
In the default variant 1) the board uses the mounted by OLIMEX DC-DC 3.3V convertor which
when the board is powered by external supply is the better alternative. However, if you use battery
it will not power the chip handling the USB and the LAN functionality. Basically the board willlack USB-HOSTs and LAN when jumpers are set in variant 1) and the board is powered by abattery via the BAT connector.
If you set the jumpers in 2) state the board's 3.3V will be handled by the built-in iMX233 DC-DC
but the problem is it isn't configured to be used with another chip so it doesn't provide enoughcurrent for all the USB-HOSTs and the LAN which might cause some of the devices plugged in the
USB to lack power and also might burn the chip if too much current is drawn. However, in this 2)
mode of jumpers it is possible to power the board from a battery and still have some current on the
USB-HOSTs and the LAN. The maximum current the built-in DC-DC can provide safely is
200mA.

6.12.4 Boot mode selecting jumpers
The boot mode is discussed in chapter 6.11 of this manual.

Page 49 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

6.13 Additional hardware components
The components below are mounted on OLinuXino but are not discussed above. They are listed
here for completeness:
Reset button - used to reset the board
Power button – when Linux is running pressing PWR_BUT will put the board in low power mode;
when powered by battery PWR_BUT is used to initially power up the board – and pressing theboard again after it is powered will put it low power mode
Recovery pads (REC) - these can be used for attaching a recovery button; when powered bybattery the recovery button is used to bring the processor to normal power mode – you can shortcircuit the pads for this feature without having to mount a button
512 (32M x 16) MBit DDR SDRAM - the exact memory used in the first revisions of the board is
Xylinx HY5DU121622D
LED1 + Power LED

6.14 Accessories
Here you will find additional information for Olimex products you can use with OLinuXino-MAXI
purchase

6.14.1 USB-SERIAL-CABLE-F
The cable for the U_DEBUG interface that can be purchased for additional cost has three cables. It
is important to specify in your purchase order whether you want the MOD-SERIAL-USB variant
with male of female connectors.

Page 50 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

CHAPTER 7: BLOCK DIAGRAM AND MEMORY
7. Introduction to the chapter
On the next page you can find a memory map for this family of processors. It is strongly
recommended to refer to the original datasheet released by Freescale for one of higher quality.

7.1 Memory addresses
Below is the table with some of the most frequently used addresses. For full list of addresses checkthe manual released by Freescale (Chapter Memory Map).

Decode Deviceblock

Mnemonic Start address End address

Size

AHB

On-chip RAM

OCRAM

0x00000000

0x00007FFF

32KB

On-chip RAM
alias

OCRAM

0x00008000

0x3FFFFFFF

External memory

0x40000000

0x5FFFFFFF

512MB

Default Slave

0x60000000

0x7FFFFFFF

512M

Page 51 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

7.2 Processor block diagram

Page 52 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

7.3 Physical memory map

Page 53 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

CHAPTER 8: SCHEMATICS
8. Introduction to the chapter
In this chapter are located the schematics describing logically and physically OLinuXino.

8.1 Eagle schematic
OLinuXino schematic is visible for reference here. You can also find them on the web page for
OLinuXino at our site: http://www.olimex.com/dev/imx233-OLinuXino-maxi.html. They arelocated in HARDWARE section.
The EAGLE schematic is situated on the next page for quicker reference.

Page 54 of 61

OLIMEX© 2012

OLinuXino User's Manual

U1

Q1
Q24.000M Hz/HC-49SM/SMD/20ppm/20pF

C26 1uF

112
118
105
117

USB_DP
USB_DM

VSSA1
VSSA2
VSSA4
VAG

124
USB_DP
123
USB_DM
113 HPL
109 HPR
111
HP_VGNDLCD_CSLCD_RSLCD_WR
LCD_RESET/GPMI_CE3N
LCD_ENABLE/I2C_SCL
LCD_HSYNC/I2C_SDA
LCD_VSYNC/LCD_BUSY
LCD_DOTCK/GPMI_RDY3

115
LINE1_INL
114
LINE1_INR

LED/GREEN/3MM

LED1

PIN34/MIC

116 MICPIN33/LRADC0
PIN32/LRADC1108
LRADC0107 LRADC1
104

LED1

I2C_SDA/GPMI_CE2N/AUART1_RX
I2C_SCL/GPMI_RDY2/AUART1_TX
PWM0/ROTARYA/DUART_RX
PWM1/ROTARYB/DUART_TX
PWM2/GPMI_RDY3
SSP1_DETECT/GPMI_CE3N/USB_ID
SSP1_CMD/SPI1_MOSI/JTAG_TDO
SSP1_DATA0/SPI1_MISO/JTAG_TDI
SSP1_DATA1/I2C_SCL/JTAG_TCLK
SSP1_DATA2/I2C_SDA/JTAG_RTCKSSP1_DATA3/SPI1_SS#/JTAG_TMS
SSP1_SCK/SPI1_SCK/JTAG_TRST

VDAC1PSWITCH

119 PSWITCH

DEBUG

89

DEBUG

R2
560R

10
14
13
12
11
15
16
17

PIN26/LCD_CS
PIN25/LCD_RS
PIN24/LCD_WR
PIN23/LCD_DISPPIN22/LCD_EN/I2C_SCL
PIN21/LCD_HSYNC/I2C_SDA
PIN20/LCD_VSYNC
PIN19/LCD_DOTCLK

128
127
125
126
91
88
83
84
85
86
87
90

AUART1_RXD
AUART1_TXD
PWM0/DUART_RXD
PWM1/DUART_TXD
PIN27/PWM2
LED1
SSP1_CMD
SSP1_DATA0SSP1_DATA1
SSP1_DATA2
SSP1_DATA3
SSP1_SCK

R19Close 2
Open 2
Open 2
Close 2

AUDIO_JACK_5PINPJ-W47S-05D2-LF_V2

R20

SSP1_DATA3

1uF C28

10k

R6

1uF C27

10k

R5

3

PIN29/SOFT_SCL

1 PIN22/LCD_EN/I2C_SCL

R30
R31
R32

NA
10k
0R

Q2
Q25.000MHz/HC-49SM

33pF C52
3.3VREG
3.3VREG12

0R(Board_Mounted)

NRESET
XI

60

XO

28
29
30
31
32

NTRST
TMS
TDI
TDO
TCK

45
44

EEDO
EEDI
EECS
EECLK
RXP
RXN
TXP
TXN

NFDX_LED/GPIO0NLNKA_LED/GPIO1
NSPD_LED/GPIO2
GPIO3
GPIO4
GPIO5
CLK24_OUT
GPIO6
CLK24_ENGPIO7

LAN9512-JZX

C67
22u F/6 .3 V

C37

2.2
2.3
2.4

+

C77

GND

R36

3.3VREG

52
53

R34
R35

560R

1
3
2
AG
KG
AY
KY
7
6
8

560R
560R

55
56
20
21
22
35
36
37
42
43

U4
PRTCTL2
PRTCTL3

1
2
3
4

L7

USB_PWR_A

8
ENA
OUT_A 7
FLAG_AIN 6
FLAG_B
GND 5
ENB
OUT_B

MIC2026-1YM
USB_PWR_B+5VEXT

FB0805/600R/2A

C61

1
3
5
6

C69

IN
BS
EN
SW
SS
FB
GND COMP

TD+
TCT
TDAG
KG
AY
KY
RD+
RCT
RD-

75

75

GREEN
YELLOW
1:1
75

1nF/2kV

75

1
4
5
2
3
7
8
6

10uF/10V

PHY&USB-HOSTx2Page 55 of 61

C73

C71 3.3nF

R45
4.99k/1%

2

U6
IN

LX

EN

FB

GND

SY8008C(AA)C

3

5V_E

R44
1.1k/1%

1

3.3VREG

2.2uH/2.6A

5

C74
22pF

R48
1.1k/1%

2

Close

L5

1

1:1

L2

10uH/3.15A/20%

R43
2.2k

4

LAN
RJLD-043TC

C70 10nF

MP1482DS

100 nF

+ C68

2
7
8
4

+5VEXT

100uF/16V/LOWESR/105C/6.3x11mm_RM2.5

25
26
24
23

47k

S
G

GND_PIN

SMBJ1 6A

D3
1.2
1.3
1.4

USB_PWR_B 2.1

AVCC

470uF/25V/LOWESR/105C

USB_PWR_A 1.1

U5
R42

10R/1%+

49.9R/1%

1
2
3
4
6
7
8
9

USB_DM
USB_DP

49.9R/1%

58
59

R41

USBDM2
USBDP2
USBDM3
USBDP3
NC
NC
NC
NC

61

+5VEXTIRLML6402
FET1

PWR
YDJ-1136

C76

65

4 9.9R/1 %PRTCTL2
PRTCTL3
NC
NC

TEST1
TEST2
TEST3
TEST4

LI-ION_BATTERY

4 9.9 R/1 %USBDM0
USBDP0EXRES
AUTOMDIX_EN

6-16VDC

100uF/16V/LOWESR/105C/6.3x11mm _RM 2.5

VSS(FLAG)

POWER SUPPLY CIRCUIT

VIN

DW02S

R3 7

13
34
40
47

-

C53 100nF
C54 100nF
C55 100nF
C56 100nF
C57 100nF
C58 100nF
C59 100nF

2

VIDEO_CON

47pF

Composite Video

BAT

USB_ TWO _LEVEL
USB_HO ST

50
41

C78

GND

VBUS_DET
USBRBIASCOMPOSITE_VIDEOBAT54S1

22u F/6 .3 V

33pF C51

VDD18ETHPLL
VDD18USBPLL

3.3VIO

3.3VIO

D2
0R

RJ45 SIDE

PIN18/LCD_D17/LAN_RES

48
62

VDD33AVDD33AVDD33AVDD33AVDD33AVDD33AVDD33A

R25

10k

R26

C66 22 nF

3.3VREGR3 3
1M

3.3VREGVDD18CORE
VDD18CORE

14
16
17
18

12.4k/1%
10k

R28
R29

15
38

11
63

REC
NA(HN1x2)

R24

LIPO_BAT

USB1

PRTCTL2
PRTCTL3

VDD33IOVDD33IOVDD33IOVDD33IOVDD33IO

5
10
49
51
54
57
64

VDDXTAL2

TV-06B

0R(Board_M ounted)

PIN21/LCD_HSYNC/I2C_SDA+1

FB0805/600R/2A

1
2
1

SDA_SW/SDA_HW

AVCC

USB2

C46 100nF
C47 100nF
C48 4.7uF
C49 100nF
C50 4.7uF FB0805/600R/2A
L3
R46
10k
3.3VREGR27
12k/1%

100nF C40 1k

SDA_SW:Close/SDA_HW:Open

L4
19
27
33
39
46

SJTAG_PSW

1k

R12
2.2k

PIN28/SOFT _SDA 3

BH10R

SCL_SW/SCL_HW

T1
BC846B

C41 100nF
C42 100nF
C43 100nF
C44 100nF
C45 100nF

R23

AUART1_RXD
I2C_SDA
SSP2_MOSIPIN12/LCD_D11/UEXT_CS

SCL_SW :C lose/SCL_HW :Open

3.3VREG

SSP1_DATA0SSP1_DATA1

2

47k
47k

XTALO

U3

R13
47k

2
4
6
8
10

C65 15p F

R9
R10

1
3
5
7
9

R40

RESET

2

TV-06B

SSP2_SCK

8
7
6
5
4
3
2
1

PWR_BUT

3.3VREG

R39

1

PIN9/LCD_D08/SSP2_MISO

2

XTALI

possible to Q1

BC846B
T2

NA(WU08S)

JTAG

RM1G4

UEXT

AUART 1_TXD
I2C_SCL

SSP1_DATA2
SSP1_DATA3
SSP1_CMD
SD_VCC
SSP1_SCK

CD/DAT3/CS
CMD/DIVSS
VDD
CLK/SCLK
DAT0/DO
DAT1/RES
DAT2/RES

22uF/6.3V

RA1206_(4X0603)_4B8_100K

3.3VREG

Place T1 and T2 as close as

SD
MICRO
2
3
6
4
5
7
8
1

D00
0
1
0
1
0
0
1
0

POWER/REC Button
PSWITCH

D

Reset Circuit
RESET

C81

AUDIO_JACK_5PINPJ-W47S-05D2-LF_V2

R11
2.2k

3.3VIOSJTAG_PSW
DEBUG

C64 15p F

R7
4.7k

C29
SD_VCC
SSP1_SCK
22uF/6.3V
SSP1_DATA0SSP1_DATA1
SSP1_DATA2

RM1G2 SSP1_DATA0
RM1G3 SSP1_DATA1
RM1G1 SSP1_DATA2
L6
CL470nH/0805/1.76R/250mA

UEXT

4
2-L
5-GND

10 k

1M

SSP1_CMD(NA)HN1X4

R 38

R8
4.7k

HN1X4

LINE_IN
1
3-R

SSP1_CMDLCD DATA
D02
D01
0
0
0
0
0
1
0
1
1
0
1
1
0
0
0
1

3.3VREG1
2
3
4

C63 15pF

R3
120R

D03
0
0
0
0
0
0
1
1

SJTAG

C62 15pF

R4
120R

R16
RA1206_(4X0603)_4B8_47K

Startup wai ts for JT AG debugger connecti on

RA1206_(4X0603)_4B8_100K

3.3VIO

R1
100k

R4

BOOT MODE SELECT:
BOOT MODE
USB
3.3V I2C Master
3.3V SPI Flash 1 Master
3.3V SPI Flash 2 Master
3.3V NAND

10k

Headphones resistance Rl = Rr = 16 Ohms!

U_DEBUG
PWM0/DUART_RXD
1
PWM1/DUART_TXD
2
3
GND
4
DEBUG

R3

RM2

GPIO

MicroSD

3.3VIO

Debug: UART or SJTAG

4
2-L
5-GND

R2

3.3V SD/MMC 1 (Default !!!)
3.3V SD/MMC 2

R21

HEADPHONES
1
3-R

PIN4/LCD_D03
PIN3/LCD_D02
PIN2/LCD_D01
PIN1/LCD_D00

R1

RA1206_(4X0603)_4B8_4.7K

MCIMX233CAG4C

Headphones and Line-In

RM3

D03_H
D02_H
D01_H
D00_H

1
1
1
1

R22
1k

3.3VIO

3.3V_E

3.3VIO_E

Close

Open

1

R47
4.99k/1%

2

OLinuXino-MAXI revision B1
Designed by OLIMEX 2012

LED/RED/0603

110 VDDA1

PWR _LEDC25 100nF

DCDC_VDDA

BOOT MODE SELECT
3.3VIO1

2

22u F/6.3 V C60

121 XTALO

T_P

C79

XTALO

PIN18/LCD_D17/LAN_RES
PIN17/LCD_D16
PIN16/LCD_D15
PIN15/LCD_D14
PIN14/LCD_D13
PIN13/LCD_D12
PIN12/LCD_D11/UEXT_CS
PIN11/LCD_D10
PIN10/LCD_D09
PIN9/LCD_D08/SSP2_MISO
PIN8/LCD_D07
PIN7/LCD_D06
PIN6/LCD_D05
PIN5/LCD_D04
PIN4/LCD_D03
PIN3/LCD_D02
PIN2/LCD_D01
PIN1/LCD_D00

NC7
NC6

High to enable Resistor Boot M ode.
If pulled low, the i.MX233 willattempt to boot from OTP.

C38 100nF

22u F/6.3 V

C24 33pF

20
19
28
29
26
27
25
24
23
22
9
8
7
6
5
4
3
2

NC1
NC2
NC3
NC4
NC5

14
17
19
25
43

LCD_RS must to be pulled

1k/1%

R4

GPMI_ALE/LCD_D17
GPMI_CLE/LCD_D16
GPMI_D07/LCD_D15/SSP2_DATA7GPMI_D06/LCD_D14/SSP2_DATA6GPMI_D05/LCD_D13/SSP2_DATA5GPMI_D04/LCD_D12/SSP2_DATA4GPMI_D03/LCD_D11/SSP2_DATA3GPMI_D02/LCD_D10/SSP2_DATA2GPMI_D01/LCD_D09/SSP2_DATA1GPMI_D00/LCD_D08/SSP2_DATA0LCD_D07
LCD_D06
LCD_D05
LCD_D04
LCD_D03
LCD_D02
LCD_D01
LCD_D00

49

2.5V

DQM0
DQS0
R18

R3

DCDC_LN1
DCDC_LP

VREF

R15
47k
PIN25/LCD_RS

R2

97
99

120 VDDXTAL
122 XTALI

53
50

CLKN
CLK
CKE
DQM1
DQS1

20
16

LDM
LDQS

3.3VIO

2 2uF/6.3V C 72

22uH/1.5A/CD53
VDDXTAL
XTALI

C23 33pF

VSS1
VSS2
VSS3
VSSQ1
VSSQ2
VSSQ3
VSSQ4
VSSQ5

CS

22uF/6 .3V C75

L1

C83 10pF

PIN31
PIN30
PIN29/SOFT_SCL
PIN28/SOFT_SDA
SSP2_SCKTEST_PAD
SSP2_MOSI

47
51

120R

R14
NA(47k)2 2uF/6.3V C8 0

C82 NA

C22 100nF

82
81
34
31
33
32
21

UDM
UDQS

R17

PIN6/LCD_D05

2.5V

R1

GPMI_CE0N
GPMI_CE1N
GPMI_WPNGPMI_RDN
GPMI_WRN/SSP2_SCK
GPMI_RDY0/SSP2_DETECTGPMI_RDY1/SSP2_CMD

46
45
44

1 k/1%

DCDC_BATTERY

98 DCDC_GND
103 BATT

#CK
CK
CKE

10 0nF C39

100

C21 22uF/6.3V

34
48
66
6
12
52
58
64

CS
WEN
CASN
RASN

PIN18/LCD_D17/LAN_RES

C19 22uF/6.3V

C20 22uF/6.3V

BA0
BA1
CLK
CLKN
CKE
CS
CASN
RASN
WEN
DQS0
DQS1
DQM1
DQM0

VDD1
VDD2
VDD3
VDDQ1
VDDQ2
VDDQ3
VDDQ4
VDDQ5

PIN20/LCD_ VSYNC
PIN19/LCD_ DOTCL K

DCDC_VDDA

BAT

79
80
36
37
78
63
61
62
77
39
40
56
46

BA0
BA1

24
21
22
23

PIN13/LCD_D1 2
PIN14/LCD_D 13
PIN15/LCD_ D14
PIN16/LCD_ D15
PIN17/LCD_ D16
BAT96

C18 100nF

EMI_BA0
EMI_BA1
EMI_CLK
EMI_CLKN
EMI_CKE
EMI_CE0N
EMI_CASN
EMI_RASN
EMI_WEN
EMI_DQS0
EMI_DQS1
EMI_DQM1
EMI_DQM0

26
27

#CS
#WE
#CAS
#RAS

BA0
BA1

PIN12/LCD_D11/UEXT_CS

C17 22uF/6.3V

DCDC_VDDIO

1
18
33
3
9
15
55
61

PIN10/LCD_D09
PIN11/LCD_D1 0

DCDC_VDDA95

C16 22uF/6.3V

2.5V

A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12

29
30
31
32
35
36
37
38
39
40
28
41
42

A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10/AP
A11
A12

DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15

PIN22/LCD_EN/I2C_SCL
PIN21/LCD_HSYNC/I2C_SDA

C15 22uF/6.3V

DCDC_VDDD

C 35

BAT

3.3VIO94

C14 100nF

10uF/10V

C12 100nF

C13 22uF/6.3V

100n F C36

DCDC_VDDD

VDD4P2102 VDD5V

D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15

PIN9/LCD_D08/SSP2_MISO

SS14

101

41
43
42
44
47
48
49
50
51
52
54
55
57
58
60
59

U2
HY5DU121622D(L)T(P)-J

2
4
5
7
8
10
11
13
54
56
57
59
60
62
63
65

10uF/10V

C11 22uF/6.3V

EMI_D00
EMI_D01
EMI_D02
EMI_D03
EMI_D04
EMI_D05
EMI_D06
EMI_D07
EMI_D08
EMI_D09
EMI_D10
EMI_D11
EMI_D12
EMI_D13
EMI_D14
EMI_D15

1 00nF C3 4C9 22uF/6.3V

C10 22uF/6.3V+5VEXT

D1

VDDM/LRADC4

10 0nF C33

106

10 0nF C32

C8 22uF/6.3V

VDDIO_EMIQVDDIO_EMI1
VDDIO_EMI2

D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15

100 nF C31

C7 100nF

38
45
53

512Mb DDR SDRAM (32Mx16)

PIN1/LCD_D0 0
PIN2/LCD_ D01
PIN3/LCD_ D02
PIN4/LCD_ D03
PIN5/LCD_ D04
PIN6 /LCD _D05
PIN7 /L CD_D06
PIN8 /L CD_D07

C5 22uF/6.3V

C6 100nF

VDDIO33_1
VDDIO33_3

A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12

100n F C30

C4 22uF/6.3V

VSSD2
VSSD1

18
92

76
75
74
73
72
71
70
69
68
67
66
65
64

+5VEXT

C3 22uF/6.3V

EMI_A00
EMI_A01
EMI_A02
EMI_A03
EMI_A04
EMI_A05
EMI_A06
EMI_A07
EMI_A08
EMI_A09
EMI_A10
EMI_A11
EMI_A12VIN

3.3VIO

35
30

39
37
35
33
31
29
27
25
23
21
19
17
15
13
11
9
7
5
3
1

22uF/6.3V

VDDD1
VDDD3

GPIO_CO N
BH40R

22uF/6.3V

1
93

40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2

2.5V

C2

3.3VREGPIN34/MIC
PIN33 /LRADC0
PIN32 /LR ADC1
PIN31
PIN30
PIN2 9/SO FT_SCL
PIN2 8/SO FT_SDA
PIN2 7/PWM2
PIN 26/LCD_CS
PIN25/LCD_RS
PIN24/LCD_W R
PIN23/LCD_DISP

DCDC_VDDD
C1OLIMEX© 2012

OLinuXino-MAXI User's Manual

8.2 Physical dimensions
Note that all dimensions are in inches.

The three highest elements on the board in order from the tallest to the shortest are: inductor L2;
USB host connector; Ethernet/LAN connector.

Page 56 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

CHAPTER 9: REVISION HISTORY AND SUPPORT
9. Introduction to the chapter
In this chapter you will find the current and the previous version of the document you are reading.
Also the web-page for your device is listed. Be sure to check it after a purchase for the latest
available updates and examples.

9.1 Document revision

Revision

Changes

Modified Page#

A,
01.06.12

Initial Creation

B,
06.06.12

Page 6 - added more info about the WIFI
option on OLinuXino-Mini
Page 10 – added instructions how to blink
the board's LED
Page 20 – removed erroneous informationof compatibility between U_DEBUG
interface and OLIMEX MOD-USB-RS232
Page 28 – fixed the table for the Linux
names, there were errors
Page 35 - added new chapter with info
about USB-SERIAL-CABLE
All – edited numerous typos, spelling
mistakes, punctuation etc.

6, 10, 20, 28, 35

C,
14.06.12

Page 6 – added details about the WIFI
modem
Pages 9,10 – added details on compilingthe Linux image
All – changed the names of the chapters
for proper bookmarking in the pdf

6, 9, 10

All

Page 57 of 61

OLIMEX© 2012

RevisionD,
18.06.12

OLinuXino-MAXI User's Manual

Changes
Page 4 - Added links to chapter names
Page 10 – Typos/bugs in code
Page 12 – Added new sub-chapter
Page 45 – Added link to the OLinuXino
yahoo group

Modified Page#

4, 10, 12, 45

E,03.07.12

Page 9, 23 - Added info on how to connect
the USB-SERIAL-CABLE-F to the board
Page 23 - Added errata on specific bugthat might leave the SD card in
unrecoverable state
Page 37 - Adjusted info on external andinternal 3.3V DC-DC

9, 23, 37

F,
05.07.12

Page 8 – changed typo about the needed
programmer
Page 9 – adjusted info about a SD card
problemPage 23 – adjusted U_DEBUG connect info
to make it clearer

8, 9, 23G,
18.07.12

Pages 10, 11 – Added info about fuseprogramming

10, 11H,
12.09.12

Pages 3,4 – Added more links and page
numbers
Page 10 – Added info about ArchLinuxI,
19.09.12

Page 15 – added info on how to install
ArchLinux, examples and also how toconnect to certain WIFI USB dongles, also
added important info about the I2C
jumpers near the UEXT

15

J,
29.10.12

Pages 26, 27, 28, 29 - Fixed wrong info
about the LQFP128 package of iMX233

26, 27, 28, 29

Page 58 of 61

3, 4, 10

OLIMEX© 2012

OLinuXino-MAXI User's Manual

9.2 Board revision

Revision

Notable Changes

B

Initial release of the board

B1

R14 removed

9.3 Useful web links and purchase codes
The web page you can visit for more info on your device is http://www.olimex.com/dev/imx233olinuxino-maxi.html.
A place for general questions, FAQ or friendly talk: http://tech.groups.yahoo.com/group/olinuxino/
You can get the latest updates on the software at: https://github.com/OLIMEX/OLINUXINO.
The OLinuXino Linux images sources: https://github.com/Freescale/fsl-community-bsp-platform.
ORDER CODES:iMX233-OLinuXino-MAXI – the best version of OLinuXino featuring Ethernet controller
iMX233-OLinuXino-MINI – the mini version of the single-board computeriMX233-OLinuXino-MICRO – tiny in size, tiny in price and perfect for breadbording
iMX233-OLinuXino-MINI-WIFI – the MINI version of OLinuXino + embedded RTL8128CUWIFI module
iMX233-OLinuXino-SD - SD card with the Linux image which can be used with every board fromthe OLinuXino family
MOD-WIFI_RTL8188 – external USB WIFI modem with RTL8188 chip
USB-SERIAL-CABLE - USB serial console cable for U_DEBUG
SY0612E - power supply adapter 12V/0.5A for iMX233-OLinuXino-MAXI and iMX233OLinuXino-MINI (Will not work with OLinuXino-MICRO)
SY0605E - power supply adapter 5V/1A for iMX233-OLinuXino-MICRO (Will not work with
iMX233-OLinuXino-MAXI and iMX233-OLinuXino-MINI)

Page 59 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

How to order?
You can order to us directly using the e-shop or by any of our distributors.
Check http://www.olimex.com/ for more info.

Page 60 of 61

OLIMEX© 2012

OLinuXino-MAXI User's Manual

9.3 Product support
For product support, hardware information and error reports mail to: support@olimex.com. Notethat we are primarily a hardware company and our software support is limited.
Please consider reading the paragraph below about the warranty of Olimex products.
Warranty and returns:
Our boards have lifetime warranty against manufacturing defects andcomponents.
During development work it is not unlikely that you can burn your programmer
or development board. This is normal, we also do development work and we havedamaged A LOT of programmers and boards during our daily job so we know how it
works. If our board/programmer has worked fine then stopped, please check if
you didn't apply over voltage by mistake, or shorted something in your target
board where the programmer was connected etc. Sometimes boards might getdamaged by ESD shock voltage or if you spill coffee on them during your workwhen they are powered.
Please note that warrany do not cover problems caused by unproper use, shorts,
over-voltages, ESD shock etc.
If the board has warranty label it should be not broken. Broken labels void
the warranty, same applies for boards modified by the customer, for instancesoldering additional components or removing components - such boards will be
not be a subject of our warranty.
If you are positive that the problem is due to manufacturing defect orcomponent you can return the board back to us for inspection.
When we receive the board we will check and if the problem is caused due toour fault and we will repair/replace the faulty hardware free of charge,otherwise we can quote price of the repair.
Note that all shippings back and forth have to be covered by the customer.
Before you ship anything back you need to ask for RMA. When you ship backplease attach to it your shipping address, phone, e-mail, RMA# and brief
description of the problem. All boards should be sent back in antistatic
package and well packed to prevent damages during the transport.

Page 61 of 61