EV-21569-SOM® Manual

Revision 1.0, September 2020
Part Number
82-EV-21569-SOM-01

Analog Devices, Inc.
One Technology Way
Norwood, MA 02062-9106

Copyright Information© 2020 Analog Devices, Inc., ALL RIGHTS RESERVED. This document may not be reproduced in any form
without prior, express written consent from Analog Devices, Inc.
Disclaimer
Analog Devices, Inc. reserves the right to change this product without prior notice. Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its
use; nor for any infringement of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under the patent rights of Analog Devices, Inc.
Trademark and Service Mark Notice
The Analog Devices logo, Blackfin, Blackfin+, SHARC, SHARC+, CrossCore, VisualDSP++, EZ-KIT, EZ-Extender, and EngineerZone are registered trademarks of Analog Devices, Inc.
All other brand and product names are trademarks or service marks of their respective owners.

Regulatory Compliance
The EV-21569-SOM evaluation board is designed to be used solely in a laboratory environment. The board is notintended for use as a consumer-end product or as a portion of a consumer-end product. The board is an open system design, which does not include a shielded enclosure and, therefore, may cause interference to other electricaldevices in close proximity. This board should not be used in or near any medical equipment or RF devices.

The EV-21569-SOM evaluation board contains ESD (electrostatic discharge) sensitive devices. Electrostatic charges
readily accumulate on the human body and equipment and can discharge without detection. Permanent damage may
occur on devices subjected to high-energy discharges. Proper ESD precautions are recommended to avoid performance degradation or loss of functionality. Store unused boards in the protective shipping package.

EV-21569-SOM ® Manualii

Contents
Preface
Purpose of This Manual................................................................................................................................. 1–1
Manual Contents ........................................................................................................................................... 1–1
Technical Support .......................................................................................................................................... 1–2
Supported Integrated Circuit ......................................................................................................................... 1–2
Supported Tools............................................................................................................................................. 1–3
Product Information ...................................................................................................................................... 1–3
Analog Devices Website.............................................................................................................................. 1–3
EngineerZone ............................................................................................................................................. 1–3

Using the Board
Product Overview .......................................................................................................................................... 2–1
Package Contents........................................................................................................................................... 2–3
Default Configuration ................................................................................................................................... 2–3
CrossCore Embedded Studio (CCES) Setup .................................................................................................. 2–4
Debug Interface ............................................................................................................................................. 2–5
Board Power .................................................................................................................................................. 2–5
Power-On-Self Test........................................................................................................................................ 2–5
Example Programs ......................................................................................................................................... 2–5
Reference Design Information ....................................................................................................................... 2–5
FT232R - USB to UART............................................................................................................................... 2–6
IS25LP512M - 512M-bit Serial Flash Memory with Dual and Quad SPI ..................................................... 2–7
IS43TR16512BL - 1Gx8, 512Mx16 8Gb DDR3 SDRAM ........................................................................... 2–7

Hardware Reference
System Architecture ....................................................................................................................................... 3–1
Software-Controlled Switches (SoftConfig).................................................................................................... 3–1
Overview of SoftConfig .............................................................................................................................. 3–1
EV-21569-SOM ® Manualiii

SoftConfig on the Board............................................................................................................................. 3–5
Programming SoftConfig Switches ............................................................................................................. 3–5
Switches......................................................................................................................................................... 3–8
Boot Mode Select ( SW1 )........................................................................................................................... 3–9
Reset Pushbutton ( SW2 )........................................................................................................................... 3–9
Jumpers ......................................................................................................................................................... 3–9
Power ( JP1 )............................................................................................................................................. 3–9
LEDs ............................................................................................................................................................. 3–9
Fault ( LED1 ) .......................................................................................................................................... 3–10
Power ( LED5 ) ........................................................................................................................................ 3–10
GPIO ( LED4, LED6, LED7 ) ............................................................................................................ 3–10
Reset ( LED8 ).......................................................................................................................................... 3–11
Connectors .................................................................................................................................................. 3–11
JTAG ( P1 ).............................................................................................................................................. 3–12
MicroUSB Connector ( P2 ) .................................................................................................................... 3–12
SoM Interface Connection ( J1,J2,and J3 )...................................................................................... 3–13

iv

EV-21569-SOM ® ManualPreface

1 PrefaceThank you for purchasing the Analog Devices, Inc. System-on-Module (SoM) EV-21569-SOM evaluation board.
The EV-21569-SOM primarily hosts the ADSP-21569 audio processor, 8 Gbit of ISSI DDR3 memory, a 512 Mbit
Quad SPI FLASH, voltage regulation, a FTDI UART to USB interface, and a high speed external connector arraythat contains all of the peripheral I/O signals. Through the high speed external connector array, the EV-21569-SOM
is intended for use with a growing family of SoM carrier products that contain a variety of peripherals to support
different applications. The SoM carrier base products that exist today are the EV-SOMCRR-EZKIT and EVSOMCRR-AUTO .
The CrossCore Embedded Studio® (CCES) software development tool chain is required for a full evaluation of thishardware platform. The EV-21569-SOM can also be used in a limited standalone mode while not plugged into a
SoM Carrier such as the EV-SOMCRR-EZKIT or EV-SOMCRR-AUTO . The standalone mode is useful for evaluating the CCES Software Development Tools and benchmarking software algorithms that do not require peripheral
I/O.
The evaluation board is designed to be used in conjunction with the CCES 2.9.3 (or newer) development environment for advanced application code development and debug, with features that enable the ability to:• Create, compile, assemble, and link application programs written in C++, C, and assembly• Load, run, step, halt, and set breakpoints in application programs• Read and write data and program memory• Read and write core and peripheral registers

Purpose of This ManualThis manual provides instructions for installing the product hardware (board). This manual describes operation andconfiguration of the board components and provides guidelines for running code on the board.

Manual Contents
The manual consists of:• Using the board
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1–1Technical Support

Provides basic board information.
• Hardware Reference
Provides information about the hardware aspects of the board.
• Bill of Materials
A companion file in PDF format that lists all of the components used on the board is available on the website
at http://www.analog.com/EV-21569-SOM .
• Schematic
A companion file in PDF format documenting all of the circuits used on the board is available on the website
at http://www.analog.com/EV-21569-SOM .

Technical Support
You can reach Analog Devices technical support in one of the following ways:• Post your questions in the processors and DSP support community at EngineerZone®:
http://ez.analog.com/community/dsp• Submit your questions to technical support directly at:
http://www.analog.com/support• E-mail your questions about processors, DSPs, and tools development software from CrossCore Embedded Studio or VisualDSP++®:
If using CrossCore Embedded Studio or VisualDSP++ choose Help > Email Support. This creates an e-mail toprocessor.tools.support@analog.com and automatically attaches your CrossCore Embedded Studio or VisualDSP++ version information and license.dat file.
• E-mail your questions about processors and processor applications to:processor.support@analog.com
processor.china@analog.com• Contact your Analog Devices sales office or authorized distributor. Locate one at:
http://www.analog.com/adi-sales

Supported Integrated Circuit
This evaluation system supports the Analog Devices ADSP-21569 IC.

1–2

EV-21569-SOM ® ManualSupported Tools

Supported Tools
Information about code development tools for the EV-21569-SOM evaluation board and ADSP-2156x productfamily is available at:
http://www.analog.com/EV-21569-SOM

Product Information
Product information can be obtained from the Analog Devices website and the online help system.

Analog Devices Website
The Analog Devices website, http://www.analog.com, provides information about a broad range of products - analog integrated circuits, amplifiers, converters, transceivers, and digital signal processors.
To access a complete technical library for each processor family, go to http://www.analog.com/processors/technical_library. The manuals selection opens a list of current manuals related to the product as well as a link to theprevious revisions of the manuals. When locating your manual title, note a possible errata check mark next to thetitle that leads to the current correction report against the manual.
Also note, MyAnalog.com is a free feature of the Analog Devices website that allows customization of a web page todisplay only the latest information about products you are interested in. You can choose to receive weekly e-mailnotifications containing updates to the web pages that meet your interests, including documentation errata against
all manuals. MyAnalog.com provides access to books, application notes, data sheets, code examples, and more.
Visit MyAnalog.com to sign up. If you are a registered user, just log on. Your user name is your e-mail address.

EngineerZone
EngineerZone is a technical support forum from Analog Devices, Inc. It allows you direct access to ADI technicalsupport engineers. You can search FAQs and technical information to get quick answers to your embedded processing and DSP design questions.
Use EngineerZone to connect with other DSP developers who face similar design challenges. You can also use thisopen forum to share knowledge and collaborate with the ADI support team and your peers. Visit http://
ez.analog.com to sign up.

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1–3

Using the Board

2 Using the Board

This chapter provides information on the major components and peripherals on the board, along with instructions
for installing and setting up the emulation software.

Product Overview
Below is an image of the EV-21569-SOM board.

Figure 2-1: Board View

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2–1

Product Overview

The board features:• Analog Devices ADSP-21569 processor• 400 ball BGA• 25 MHz oscillator• DDR3 Memory• 512Mx16 bit (8Gbit )• ISSI IS43TR16512BL-125KBL• 1.35V• SPI Flash Quad (SPI2) Memory• 512Mbit• ISSI IS25LP512M - 512M-bit Serial Flash Memory with Dual and Quad SPI• Single/Dual/Quad SPI• Debug Interface (JTAG)• JTAG 10-pin 0.05” header• LEDs
• 8 LEDs: one power (green), one board reset (red), three general-purpose (amber), one fault (red), and two
UART LEDs (amber)• Pushbuttons• One pushbutton, RESET• SoM Interface Connector• DAI• SPORT• SPI• UART• TWI• Link Port• GPIO• MLB• RESET
2–2

EV-21569-SOM ® ManualPackage Contents• GND/3.3V/5V/12V output

Package Contents
Your EV-21569-SOM package contains the following items.
• EV-21569-SOM board
Contact the vendor where you purchased your EV-21569-SOM evaluation board or contact Analog Devices, Inc. if
any item is missing.

Default Configuration
The EV-21569-SOM board is designed to run as a standalone unit.
The Default Hardware Setup figure shows the default settings for jumpers and switches and the location of thejumpers, switches, connectors, and LEDs. Confirm that your board is in the default configuration before using theboard.

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2–3

CrossCore Embedded Studio (CCES) Setup

Boot Mode Select
SW1

JP1
Power
Selection)

SW2
Reset Button

Figure 2-2: Default Hardware Setup

CrossCore Embedded Studio (CCES) Setup
Information on using the CCES tools is available at: https://analog.com/cces-quickstart

2–4

EV-21569-SOM ® ManualDebug Interface

Debug Interface
The EV-21569-SOM provides a JTAG connection via P1 . This is for attaching an emulator, such as the ICE-1000
or ICE-2000 to for debugging.
When the EV-21569-SOM is connected to a carrier board the Debug Agent on the carrier board can be used. To use
this Debug Agent, all postions on SW1 (on the carrier board) must be in the ON position. If an emulator, such as
the ICE-1000 or ICE-2000, is used instead all postions on SW1 must be in the OFF position.

Board PowerThe EV-21569-SOM powered via P2 when the board is in standalone mode. When in this mode the jumper on
JP1 should be on Pins 1-2 to select power input from P2 . When the EV-21569-SOM is connected to a carrierboard the power is supplied via the carrier board. When in this mode the jumper on JP1 should be on Pins 2-3 toselect power input from the carrier board.

Power-On-Self Test
The Power-On-Self-Test Program (POST) tests all the EZ-KIT carrier board peripherals and validates functionality
as well as connectivity to the processor. Once assembled, each EZ-KIT carrier board is fully tested for an extended
period of time with POST for all the compatible SoM modules. All EZ-KIT carrier boards are shipped with POST
preloaded into flash memory. The POST is executed by resetting the board and connecting the USB To UART toyour PC with an open terminal window. The POST also can be used as a reference for a custom software design or
hardware troubleshooting.
Note that the source code for the POST program is included in the Board Support Package (BSP) along with thereadme file that describes how the board is configured to run POST.

Example Programs
Example programs are provided with the EV-21569-SOM Board Support Package (BSP) to demonstrate various capabilities of the product. The programs can be found in the EV-21569-SOM\examples installation folder. Refer to the readme file provided with each example for more information.

Reference Design Information
A reference design info package is available for download on the Analog Devices Web site. The package provides
information on the schematic design, layout, fabrication, and assembly of the board.
The information can be found at:
http://www.analog.com/EV-21569-SOM

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2–5

FT232R - USB to UARTFT232R - USB to UARTThe FT232R is a USB-to-serial-UART interface with the following advanced features:• Single chip USB to asynchronous serial data transfer interface• Entire USB protocol handled on the chip. No USB specific firmware programming required• Fully-integrated 1024 bit EEPROM storing device descriptors and CBUS I/O configuration• Fully-integrated USB termination resistors• Fully-integrated clock generation with no external crystal required, plus optional clock output selection enabling a glueless interface to an external MCU or FPGA
• Data transfer rates from 300 baud to 3 Mbaud (RS422, RS485, RS232) at TTL levels• 128 byte receive buffer and 256 byte transmit buffer utilizing buffer smoothing technology to allow for highdata throughput• FTDI’s royalty-free Virtual Com Port (VCP) and Direct (D2XX) drivers eliminate the requirement for USB
driver development in most cases.
• Transmit and receive LED drive signals• UART interface support for 7 or 8 data bits, 1 or 2 stop bits, and odd/even/mark/space/no parity• FIFO receives and transmits buffers for high-data throughput• Device supplied pre-programmed with unique USB serial number• Supports bus-powered, self-powered and high-power bus-powered USB configurations• Integrated +3.3V level converter for USB I/O• Integrated level converter on UART and CBUS for interfacing to between +1.8V and +5V logic• True 5V/3.3V/2.8V/1.8V CMOS drive output and TTL input• Configurable I/O pin output drive strength• Integrated power-on-reset circuit• Fully-integrated AVCC supply filtering - no external filtering required.
• UART signal inversion option• +3.3V (using external oscillator) to +5.25V (internal oscillator) single supply operation• Low-operating and USB suspend current• Low USB bandwidth consumption• UHCI/OHCI/EHCI host controller compatible• USB 2.0 full speed compatible
2–6

EV-21569-SOM ® ManualIS25LP512M - 512M-bit Serial Flash Memory with Dual and Quad SPI

IS25LP512M - 512M-bit Serial Flash Memory with Dual andQuad SPIThe IS25LP512M Serial Flash memory offers a versatile storage solution with high flexibility and performance in a
simplified pin count package. ISSI’s “Industry Standard Serial Interface” Flash is for systems that require limited
space, a low pin count, and low power consumption. The device is accessed through a 4-wire SPI Interface consisting of a Serial Data Input (SI), Serial Data Output (SO), Serial Clock (SCK), and Chip Enable (CE#) pins, which
can also be configured to serve as multi-I/O (see pin descriptions).
The device supports Dual and Quad I/O, as well as standard, Dual Output, and Quad Output SPI. Clock frequencies of up to 133MHz allow for equivalent clock rates of up to 532MHz (133MHz x 4) which equates to
66.5Mbytes of data throughput. The IS25xE series of Flash adds support for DTR (Double Transfer Rate) commands that transfer addresses and read data on both edges of the clock.These transfer rates can outperform 16-bit
Parallel Flash memories, allowing for efficient memory access to support XIP (eXecute In Place) operation.
The memory array is organized into programmable pages of 256/512 bytes. This family supports page programmode where 1 to 256/512 bytes of data are programmed in a single command.
QPI (Quad Peripheral Interface) supports 2-cycle instructions, further reducing instruction times. Pages can beerased in groups of 4Kbyte sectors, 32Kbyte blocks, 64K/256Kbyte blocks, and/or the entire chip. The uniform sector and block architecture allows for a high degree of flexibility so that the device can be utilized for a broad variety
of applications requiring solid data retention.

IS43TR16512BL - 1Gx8, 512Mx16 8Gb DDR3 SDRAM• Low Voltage (L): VDD and VDDQ = 1.35V + 0.1V, -0.067V - Backward compatible to 1.5V
• High speed data transfer rates with system frequency up to 933 MHz• 8 internal banks for concurrent operation• 8n-Bit pre-fetch architecture• Programmable CAS Latency• Programmable Additive Latency: 0, CL-1,CL-2• Programmable CAS WRITE latency (CWL) based on tCK• Programmable Burst Length: 4 and 8• Programmable Burst Sequence: Sequential or Interleave• BL switch on the fly• Auto Self Refresh(ASR)• Self Refresh Temperature(SRT)

EV-21569-SOM ® Manual

2–7IS43TR16512BL - 1Gx8, 512Mx16 8Gb DDR3 SDRAM• Refresh Interval: 7.8 µs (8192 cycles/64 ms) Tc= -40°C to 85°C 3.9 µs (8192 cycles/32 ms) Tc= 85°C to 95°C
1.95 µs (8192 cycles/16 ms) Tc= 95°C to 105°C 0.97 µs (8192 cycles/8 ms) Tc= 105°C to 115°C• Partial Array Self Refresh• Asynchronous RESET pin• TDQS (Termination Data Strobe) supported (x8 only)• OCD (Off-Chip Driver Impedance Adjustment)• Dynamic ODT (On-Die Termination)• Driver strength : RZQ/7, RZQ/6 (RZQ = 240 Ω)• Write Leveling• Up to 200 MHz in DLL off mode

2–8

EV-21569-SOM ® ManualHardware Reference

3 Hardware ReferenceThis chapter describes the hardware design of the EV-21569-SOM board.

System Architecture
The Block Diagram figure shows the board configuration.
Figure 3-1: Block Diagram

The EV-21569-SOM board is designed to demonstrate the ADSP-21569 processor’s capabilities. The board has a 25
MHz input clock and runs at a max core clock frequency of 1GHz.
User I/O to the processor is provided in the form of two pushbuttons and three LEDs.
The software-controlled switches (SoftConfig) facilitate the switch multi-functionality by disconnecting the pushbuttons from their associated processor pins and reusing the pins elsewhere on the board.

Software-Controlled Switches (SoftConfig)
On the board, most of the functionality traditionally controlled by mechanical switches and jumpers is controlled by
I2C software-controlled switches. The mechanical switches that remain are provided for the boot mode and pushbuttons. Reference any SoftConfig*.c file found in the installation directory for an example of how to set up
the SoftConfig feature of the board through software. The SoftConfig section of this manual serves as a reference toany user that intends to modify an existing software example. If software provided by ADI is used, there should be
little need to reference this section.
NOTE: Be careful when changing SoftConfig settings. When connecting extender cards, configure the settings to

avoid conflict among interfaces so multiple signals are not driven on the same pins.

Overview of SoftConfig
In order to further clarify the use of electronic single FET switches and multi-channel bus switches, an example ofeach is illustrated and compared to a traditional mechanical switching solution. This is a generic example that uses
similar FET and bus switch components that are on the board.

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Software-Controlled Switches (SoftConfig)

After this generic discussion, there is a detailed explanation of the SoftConfig interface specific to the EV-21569SOM carrier board.
The Example of Individual FET Switches figure shows two individual FET switches (Pericom PI3A125CEX) withreference designators UA and UB. Net names ENABLE_A and ENABLE_B control UA and UB. The default FET
switch enable settings in this example are controlled by resistors RA and RB, which pull the enable pin 1 of UA andUB to ground (low), respectively. In a real example, these enable signals are controlled by the Microchip I/O expander. The default pull-down resistors connect the signals EXAMPLE_SIGNAL_A and EXAMPLE_SIGNAL_B andalso connect signals EXAMPLE_SIGNAL_C and EXAMPLE_SIGNAL_D. To disconnect EXAMPLE_SIGNAL_A
from EXAMPLE_SIGNAL_B, the Microchip I/O expander is used to change ENABLE_A to a logic 1 through software that interfaces with the Microchip I/O expander. The same procedure for ENABLE_B disconnects
EXAMPLE_SIGNAL_C from EXAMPLE_SIGNAL_D.

Figure 3-2: Example of Individual FET Switches

The following figure shows the equivalent circuit to the Example of Individual FET Switches figure but utilizes mechanical switches that are in the same package. The default is shown by black boxes located closer to the ON label ofthe switches. In order to disconnect these switches, physically move the switch to the OFF position.

Figure 3-3: Example of a Mechanical Switch (Equivalent to Example of Individual FET Switches Figure)

3–2

EV-21569-SOM ® Manual

Software-Controlled Switches (SoftConfig)

The Example of Bus Switch figure shows a bus switch example, reference designator UC (Pericom
PI3LVD512ZHE), selecting between lettered functionality and numbered functionality. The signals on the left side
are multiplexed signals with naming convention letter_number. The right side of the circuit shows the signals separated into letter and number, with the number on the lower group (0B1) and the letter on the upper group (0B2).
The default setting is controlled by the signal CONTROL_LETTER_NUMBER which is pulled low. This selects thenumber signals on the right to be connected to the multiplexed signals on the left by default. In this example, theMicrochip I/O expander is not shown but controls the signal CONTROL_LETTER_NUMBER and allows the user tochange the selection through software.

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3–3Software-Controlled Switches (SoftConfig)

Figure 3-4: Example of a Bus Switch

The following figure shows the equivalent circuit to the Example of Bus Switch figure but utilizes mechanicalswitches. The default for reference designators SWC and SWD is illustrated by black boxes located closer to the ON
label of the switches to enable the number signals by default. Also, note the default setting for reference designators
SWE and SWF is OFF. In order to connect the letters instead of the numbers, the user physically changes all switches
on SWC and SWD to the OFF position and all switches on SWE and SEF to the ON position.

3–4

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Software-Controlled Switches (SoftConfig)

Figure 3-5: Example of a Mechanical Switch (Equivalent to Example of Bus Switch)

SoftConfig on the Board
Two Microchip MCP23017 GPIO expanders provide control for individual electronic switches. The TWI2 interface of the processor communicates with the Microchip devices. There are individual switches with default settings
that enable basic board functionality.
The Default Processor Interface Availability table lists the processor and board interfaces that are available by default. Note that only interfaces affected by software switches are listed in the table.
Table 3-1: Default Processor Interface Availability
Interface

Availability by Default

UART0

USB to UART FTDI232RQSPI Flash

Quad mode enabled

LEDs

Enabled

Programming SoftConfig Switches
On the board, two Microchip MCP23017 devices exist. Each of these devices has the following programming characteristics:• Each GPIO register controls eight signals (software switches).
GPIO Register

Register Address

GPIOA

0x12

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3–5Software-Controlled Switches (SoftConfig)

GPIO Register

Register Address

GPIOB

0x13

• By default, the Microchip MCP23017 GPIO signals function as input signals.
The signals must be programmed as output signals to override their default values. A zero is programmed into
the register to enable the signal as an output. The following table shows the Microchip GPIO expander register
addresses.
IODIR Register

IODIR Register Address

IODIRA

0x00

IODIRB

0x01

Each example in the Board Support Package (BSP) includes source files that program the soft switches, even if thedefault settings are being used. The README for each example identifies only the signals that are being changed
from their default values. The code that programs the soft switches is located in the SoftConfig_XXX.c file ineach example, where XXX is the name of the baord.
The I 2 C Hardware Address (0x21) and I 2 C Hardware Address (0x22) tables outline the default values for each of
the two Microchip MCP23017 devices.
Table 3-2: I2C Hardware Address (0x21)
GPIO

MCP23017 Register Address

Default Value

GPIOA

0x12

0x02

GPIOB

0x13

0xC4

GPIO

MCP23017 Register Address

Default Value

GPIOA

0x12

0xE0

GPIOB

0x13

0xFF

Table 3-3: I2C Hardware Address (0x22)

The board schematic shows how the two Microchip GPIO expanders are connected to the board’s ICs.
The Output Signals of Microchip GPIO Expander (U13 Port A) and Output Signals of Microchip GPIO Expander(U13 Port B) tables show the output signals of the Microchip GPIO expander (U13), with a TWI address of 0100
001X, where X represents the read or write bit. The signals that control an individual FET have an entry in the
FET column. The Component Connected column shows the board IC that is connected if the FET is enabled. The
Microchip (U13) is controlling the enable signal of a FET switch. Also note that if a particular functionality of theprocessor signal is being used, it is in bold font in the Processor Signal column.

3–6

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Software-Controlled Switches (SoftConfig)

Table 3-4: Output Signals of Microchip GPIO Expander (U13 Port A)
Bit

Signal Name

Description

FET

Processor Signal

Connected

Default(if applicable)
0

LED6

GPIO LED

None

LED6

Low

1

LED7

GPIO LED

None

LED7

Low

2

LED4

GPIO LED

None

LED4

Low

3

SPI2FLASH_
CS_EN

Enable SPI Flash CS

U3

PA_05/SPI2_SEL1/OSPI_SEL1/SMC0_D05/
SPI2_SS

U11

High

4

SPI2D2_D3_
EN

Enabel SPI Flash Quad Mode

U4 U5

PA_02/SPI2_D2/OSPI_D2/
U11
TWI3_SCL/SMC0_D02/
TM0_ACLK3 PA_03/SPI2_D3/
OSPI_D3/TWI3_SDA/
SMC0_D03

High5

UART0_EN

Enable FTDI UART to USB

U8

PA_06/SPI0_CLK/UART0_TX/ U7
OSPI_D4/SMC0_D06/
TM0_ACLK1 PA_07/
SPI0_MISO/UART0_RX/
OSPI_D5/SMC0_D07/
TM0_ACI0

Low

6

UART0_FLOW_ Enables UART Flow Control on U8
EN
FTDI

PA_08/SPI0_MOSI/UART0_RTS/OSPI_D6/
SMC0_D08/TM0_ACLK2
PA_09/SPI0_SEL1/
UART0_CTS/OSPI_D7/
SMC0_D09/SPI0_SS

U7

Low

7

NOT USED

Processor Signal

Connected

Default

Table 3-5: Output Signals of Microchip GPIO Expander (U13 Port B)
Bit

Signal Name

Description

FET(if applicable)
0

NOT USED

1NOT USED2NOT USED3NOT USED4NOT USED

5NOT USED

6NOT USED7NOT USED

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Switches

Switches
This section describes operation of the switches. The switch locations are shown in the Switch/Jumper Locations
figure.

Boot Mode Select
SW1

JP1
Power
Selection)

SW2
Reset Button

Figure 3-6: Switch/Jumper Locations

3–8

EV-21569-SOM ® ManualSwitches

Boot Mode Select ( SW1 )The Boot Mode selection switch selects between the different boot modes of the processor. The Boot Mode Switch
table shows the available boot mode settings. By default, the processor boots from SPI2 master boot which uses the
on-board SPI flash memory.
Table 3-6: Boot Mode Switch
Position

Processor Boot Mode0

No Boot

1

SPI Master Boot (Default)

2

SPI Slave Boot

3

UART Boot

4

Link Port Boot

5

OSPI Master Boot

6

Reserved

7

Reserved

Reset Pushbutton ( SW2 )The reset pushbutton resets the ADSP-21569 processor. The reset signal also is connected to the expansion connectors via the SYS_HWRST signal. Reset ( LED8 ) is used to indicate when the board is in reset.

Jumpers
This section describes functionality of the configuration jumpers. The Switch/Jumper Locations figure shows thejumper locations.

Power ( JP1 )The power jumper ( JP1 ) selects the input power source to the EV-21569-SOM board. Pin 1-2 selects power input
from the P2 USB port and Pin 2-3 selects Power from the SoM Interface Connectors. When using the EVSOMCRR-EZKIT carrier board or other plug in carrier board, use Jumper setting Pin 2-3.

LEDs
This section describes the on-board LEDs. The LED Locations figure shows the LED locations.

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3–9

LEDs

LED5
Power

LEDs 4, 6 and 7
GPIO

LED3
TX

LED2
RX

LED1
Fault

LED8
Reset

Figure 3-7: LED Locations

Fault ( LED1 )When ON (red), it indicates a system fault. For more information, refer to the ADSP-2156xHardware Reference
Manual.

Power ( LED5 )When ON (green), it indicates that power is being supplied to the board properly.

GPIO ( LED4, LED6, LED7 )Three LEDs are connected to the SoftConfig (see the GPIO LEDs table). The LEDs are active high and are turned
ON (amber) by writing to the U13 SoftConfig IC.

3–10

EV-21569-SOM ® ManualLEDs

Table 3-7: GPIO LEDs
Reference Designator

Programmable Flag Pin

LED4

SoftSwitch

LED6

SoftSwitch

LED7

SoftSwitch

Reset ( LED8 )When ON (red), it indicates that the board is in reset. A master reset is asserted by pressing SW2 , which activates
the LED. For more information, see Reset Pushbutton ( SW2 ).

Connectors
This section describes connector functionality and provides information about mating connectors. The connector
locations are shown in the Connector Locations figure.

P2
Micro
USB

P1
JTAG

Figure 3-8: Connector Locations Top View

EV-21569-SOM ® Manual

3–11

Connectors

J1

J2

J3

Figure 3-9: Connector Locations Bottom View

JTAG ( P1 )The JTAG header provides debug connectivity for the processor. This is a 0.05" shrouded through-hole connector
from SAMTEC (SHF-105-01-L-D-SM-K). This connector mates with ICE-1000, ICE-2000, and any newer Analog Devices emulators. For more information, see Debug Interface

MicroUSB Connector ( P2 )USB Connection for FTDI RS232 to USB connection, and also power to SoM when JP1 pins 1-2 are set.
Part Description

Manufacturer

Part Number

MicroUSB 2.0

HiroseZX62D-AB-5P8(30)Mating Cable

USB A to MicroUSB

3–12

ANY

ANY

EV-21569-SOM ® ManualConnectors

SoM Interface Connection ( J1,J2,and J3 )The SoM Interface consists of three SAMTEC high speed connectors that provide the DSP peripheral signals for use
with a plug in baseboard. The SoM Connector figure shows the connector locations on the back of the board.
These signals are based upon the peripheral signal needs, which allows multiple DSPs to be used with this connection. These connectors are self-mating and the pinout here reflects the connectors on the EV-21569-SOM.
The SoM Interface A Connector (J1), SoM Interface B Connector (J2), and SoM Interface C Connector (J3) tables show
the signal associated with each pin on the connectors.
Table 3-8: SoM Interface A Connector (J1)
Pin

SignalPin

SignalPin

SignalPin

SignalPin

Signal

1

GND1

21

DAI0_PIN10

41

DAI0_PIN20

61

NU

81

GPIO3

2

GND2

22

DAI1_PIN10

42

DAI1_PIN20

62

NU

82

NU

3

DAI0_PIN01

23

DAI0_PIN11

43

GND3

63

NU

83

GPIO4

4

DAI1_PIN01

24

DAI1_PIN11

44

GND4

64

NU

84

GPIO6

5

DAI0_PIN0225

DAI0_PIN12

45

GND5

65

NU

85

GPIO5

6

DAI1_PIN02

26

DAI1_PIN12

46

GND6

66

NU

86

GPIO7

7

DAI0_PIN03

27

NU

47

NU

67

NU

87

GND9

8

DAI1_PIN03

28

NU

48

NU

68

NU

88

GPIO8

9

DAI0_PIN04

29

NU

49

NU

69

NU

89

NU

10

DAI1_PIN04

30

NU

50

NU

70

NU

90

GPIO9

11

DAI0_PIN05

31

NU

51

NU

71

NU

91

NU

12

DAI1_PIN05

32

NU

52

NU

72

NU

92

GPIO1013

DAI0_PIN06

33

NU

53

NU

73

NU

93

NU

14

DAI1_PIN06

34

NU

54

NU

74

NU

94

GND10

15

DAI0_PIN07

35

NU

55

GND7

75

NU

95

NU

16

DAI1_PIN07

36

NU

56

GND8

76

NU

96

NU

17

DAI0_PIN08

37

NU

57

NU

77

GPIO1

97

NU

18

DAI1_PIN08

38

NU

58

NU

78

NU

98

NU

19

DAI0_PIN09

39

DAI0_PIN19

59

NU

79

GPIO2

99

NU

20

DAI1_PIN09

40

DAI1_PIN19

60

NU

80

NU

100

NU

Table 3-9: SoM Interface B Connector (J2)Pin

SignalPin

SignalPin

SignalPin

SignalPin

Signal

1

GND1

21

OSPI_D7

41

TWI2_SDA

61

NU

81

LINKPORT0_D7

EV-21569-SOM ® Manual

3–13Connectors

Table 3-9: SoM Interface B Connector (J2) (Continued)
Pin

SignalPin

SignalPin

SignalPin

SignalPin

Signal

2

GND2

22

SPI1_SEL2b42

UART2_RXb

62

GND8

82

LINKPORT1_D7

3

SP2_OSPI_MISO 23

SPI2_SEL2b

43

UART0_TXb

63

NU

83

LINKPORT0_D6

4

SPI0_CLK

24

GND3

44

UART2_RTSb

64

CAN0_TX

84

LINKPORT1_D6

5

SP2_OSPI_MOSI 25

GND4

45

UART0_RXb

65

NU

85

LINKPORT0_D5

6

SPI0_MISO

26

NU

46

UART2_CTSb

66

CAN0_RX86

LINKPORT1_D5

7

SPI2_OSPI_D2

27

NU

47

UART0_RTSb

67

NU

87

LINKPORT0_D4

8

SPI0_MOSI

28

NU

48

GND6

68

GND

88

LINKPORT1_D4

9

SP2_OSPI_D3

29

NU

49

UART0_CTSb

69

NU

89

LINKPORT0_D3

10

SPI0_SSb

30

NU

50

GPIO1

70

CAN1_TX

90

LINKPORT1_D3

11

SP2_OSPI_CLK

31

TWI0_SCL

51

GND5

71

GND7

91

LINKPORT0_D2

12

SPI0_SEL2b32

UART1_TXb

52

GPIO2

72

CAN1_RX92

LINKPORT1_D2

13

SP2_OSPI_SSb

33

TWI0_SDA

53

NU

73

NU

93

LINKPORT0_D1

14

SPI1_CLK34

UART1_RXb

54

NU

74

NU

94

LINKPORT1_D1

15

OSPI_D4

35

TWI1_SCL

55

NU

75

NU

95

LINKPORT0_D0

16

SPI1_MISO

36

UART1_RTSb

56

NU

76

NU

96

LINKPORT1_D0

17

OSPI_D5

37

TWI1_SDA

57

NU

77

NU

97

LINKPORT0_ACK18

SPI1_MOSI38

UART1_CTSb

58

NU

78

NU

98

LINKPORT1_ACK

19

OSPI_D6

39

TWI2_SCL

59

NU

79

GND9

99

LINKPORT0_CLK20

SPI1_SSb

40

UART2_TXb

60

NU

80

GND10

100

LINKPORT1_CLK

Table 3-10: SoM Interface C Connector (J3)Pin

SignalPin

SignalPin

SignalPin

SignalPin

Signal

1

GND1

21

NU

41

GND7

61

NU

81

NU

2

GND2

22

GND4

42

CLK1

62

NU

82

GPIO3

3

NU

23

NU

43

NU

63

NU

83

NU

4

NU

24

NU

44

CLK2

64

NU

84

GPIO4

5

NU

25

GND3

45

NU

65

NU

85

GND11

6

NU

26

NU

46

GND8

66

NU

86

GPIO5

7

NU

27

NU

47

NU

67

NU

87

VDD_EXT

8

NU

28

NU

48

JTG0_TMS/
SWDIO

68

NU

88

GPIO6

9

NU

29

NU

49

NU

69

NU

89

VDD_VREF

3–14

EV-21569-SOM ® ManualConnectors

Table 3-10: SoM Interface C Connector (J3) (Continued)
Pin

SignalPin

SignalPin

SignalPin

SignalPin

Signal

10

NU

30

NU

50

JTG0_TCK/
SWCLK

70

NU

90

GND12

11

NU

31

NU

51

NU

71

NU

91

VDD_A

12

NU

32

NU

52

JTG0_TDO/SW0 72

NU

92

VDD_DMC

13

NU

33

NU

53

NU

73

NU

93

VDD_INT

14

NU

34

NU

54

JTG0_TDI

74

NU

94

SYS_HWRST

15

NU

35

NU

55

NU

75

NU

95

PWR_SEQ_GOOD

16

NU

36

GND5

56

JTG0_TRST

76

GND10

96

SoM_Reset

17

NU

37

NU

57

NU

77

NU

97

VDD1

18

NU

38

SYS_CLKOUT

58

TARGET_RESET 78

GPIO1

98

VSS1

19

NU

39

GND6

59

NU

79

NU

99

VDD2

20

NU

40

AUDIO_CLK

60

GND9

80

GPIO2

100

VSS2

Table 3-11: Mating Connector
Part Description

Manufacturer

Part Number

100-pin, 0.64 mm

SAMTEC

LSS-150-01-L-DV-A-K

Mating Connector
100-pin, 0.64 mm

EV-21569-SOM ® Manual

SAMTEC

LSS-150-01-L-DV-A-K

3–15

EV-21569-SOM ® Manual16