WIZ820io User Manual(Version 1.0)

©2011 WIZnet Co., Ltd. All Rights Reserved.
☞ For more information, visit our website at http://www.wiznet.co.kr

WIZ820io User Manual (WIZnet Co., Ltd.)1

Document Revision History
DateRevision

2011-09-15

V1.0

Changes
Official Release

WIZ820io User Manual (WIZnet Co., Ltd.)2

1. Introduction
WIZ820io is the internet offload network module that includes W5200 (TCP/IP
hardwired chip, include PHY), MAG-JACK (RJ45 with X’FMR) with other glue logics.
It can be used as a component and no effort is required to interface W5200 andTransformer.
The WIZ820io is an ideal option for users who want to develop their Internetenabling systems rapidly.
For the detailed information on implementation of Hardware TCP/IP, referto the W5200 Datasheet.
WIZ820io consists of W5200 and MAG-JACK.
zz

TCP/IP, Ethernet MAC : W5200
Ethernet PHY : Included in W5200

z

Connector : MAG-JACK(RJ45 with Transformer)

1.1 Featurez
zzzzzzzzzzzzzz

Supports 10/100 Base TX
Supports half/full duplex operation
Supports auto-negotiation and auto cross-over detection
IEEE 802.3/802.3u Compliance
Supports high speed SPI Interface (SPI mode 0, 3)
Operates 3.3V with 5V I/O signal tolerance
Supports network status indicator LEDs
Includes Hardware Internet protocols: TCP, IPv4, UDP, ICMP, ARP, PPPoE,IGMP
Includes Hardware Ethernet protocols: DLC, MAC
Supports 8 independent connections simultaneously
Supports Power down mode
Supports Wake On LAN
Supports Socket API for easy application programming
Interfaces with two 2.54mm pitch 1 x 6 header pin
Very small form factor: 23mm x 25mm (PCB size)

WIZ820io User Manual (WIZnet Co., Ltd.)32. Pin assignment & description
2.1 Pin assignment< TOP side view >< Pin assignment >WIZ820io User Manual (WIZnet Co., Ltd.)4

2.2 Pin description
Pin No.

I/O

Pin Name

Description

1P

GND

Ground2P

GND

Ground

3I

MOSI

4I

SCLK

SPI Master Out Slave In
This pin is used to SPI MOSI signal pin.
SPI ClockThis pin is used to SPI Clock Signal pin.
SPI Slave Select : Active Low

5InSS

J1

This pin is used to SPI Slave Select signal
Pin when using SPI interface.
Interrupt : Active low
This pin indicates that W5200 requires MCU
attention after socket connecting,

6OnINT

disconnecting, data receiving timeout, andWOL (Wake on LAN). The interrupt iscleared by writing IR Register or Sn_IR(Socket n-th Interrupt Register). Allinterrupts are maskable.

1P

GNDGround

2

P

3V3D

Power : 3.3 V power supply

3P

3V3D

Power : 3.3 V power supply
Power Down : Active High

4I

PWDN

This pin is used to power down pin.
Low : Normal Mode Enable
High : Power Down Mode Enable

J2

Reset : This pin is active low input toinitialize or re-initialize W5200.
5I

nRESET

It should be held at least 2us after low
assert, and wait for at least 150ms after
high de-assert in order for PLL logic to bestable.

6OMISO

WIZ820io User Manual (WIZnet Co., Ltd.)SPI Master In Slave Out
This pin is used to SPI MISO signal pin.
5

3. Device SPI operations
WIZ820io is controlled by a set of instruction that is sent from a external host ,commonly referred to as the SPI Master. The SPI Master communicates with
W5200 via the SPI bus, which is composed of four signal lines: Slave Chip Select(nSS), Serial Clock (SCLK), MOSI (Master Out Slave In) and MISO (Master InSlave Out).
The SPI protocol defines four modes for its operation (Mode 0-3). Each mode
differs according to the SCLK polarity and phase - how the polarity and phase
control the flow of data on the SPI bus. The W5200 operates as SPI Slave device
and supports the most common modes - SPI Mode 0 and 3.
The only difference between SPI Mode 0 and 3 is the polarity of the SCLK signal
at the inactive state. With SPI Mode 0 and 3, data is always latched in on therising edge of SCLK and always output on the falling edge of SCLK.

3.1 Process of using general SPI Master device
1. Configure Input/Output direction on SPI Master Device pins.
2. Configure nSCS as ‘High’ on inactive
3. Write target address for transmission on SPDR register (SPI Data Register).
4. Write OP code and data length for transmission on SPDR register.
5. Write desired data for transmission on SPDR register.
6. Configure nSCS as ‘Low’ (data transfer start)
7. Wait for reception complete
8. If all data transmission ends, configure nSCS as ‘High’< W5200 SPI Frame Format >WIZ820io User Manual (WIZnet Co., Ltd.)6

< Address and OP/DATA Length Sequence Diagram >3.2 Read processing
The READ processing is entered by driving nSS low, followed by the Address, theOP code, the Data Length and the Data byte on MOSI. The OP code (OP) isdefined type of the READ OP and WIRTE OP. On OP = 0, the read operation isselected. Otherwise, On OP = 1, the write operation is selected.
In W5200 SPI mode, the Byte READ processing and the burst READ processing
are provided. The Byte READ processing takes 4 instructions which is consist ofthe 16-bit Address, the 1-bit OP code(0x0), the 15-bit Data length and 8-bit Data.
Otherwise, The Burst READ processing only takes the Data instruction after thesetting of the burst read processing. To distinguish between the Byte READ andthe burst READ processing, the Data length is used. If the Data length is ‘1,’ theByte READ processing is operated. Otherwise, the Burst READ Processing isoperated when the Data length is more than two. The MISO pin should beselected by driving MISO low after the falling edge of the nSS.
WIZ820io User Manual (WIZnet Co., Ltd.)7

< Read Sequence >/* Pseudo Code for Read data of 8bit per packet */#define data_read_command

0x00

uint16 addr;// Address : 16bits

int16 data_len;// Data length :15bits

uint8 data_buf[]; // Array for data
SpiSendData();// Send data from MCU to W5200

SpiRecvData();// Receive data from W5200 to MCU{ISR_DISABLE(); // Interrupt Service Routine disable
CSoff(); // CS=0, SPI start// SpiSendData
SpiSendData(((addr+idx) & 0xFF00) >> 8);
SpiSendData((addr+idx) & 0x00FF);// Address byte 1// Address byte 2// Data write command + Data length upper 7bits
SpiSendData((data_read_command| ((data_len& 0x7F00) >> 8)));// Data length bottom 8bits
SpiSendData((data_len& 0x00FF));// Read data:On data_len> 1, Burst Read Processing Mode.
for(int idx = 0; idx<data_len; idx++){
WIZ820io User Manual (WIZnet Co., Ltd.)

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SpiSendData(0); // Dummy data
data_buf[idx] = SpiRecvData(idx); // Read data}
CSon(); // CS=1, SPI end
ISR_ENABLE(); // Interrupt Service Routine disable}

3.3 Write processing
The WRITE processing is entered by driving nSS low, followed by the Address, theOP code, the Data Length, and the Data byte on MISO.
In W5200 SPI mode, the Byte WRITE processing and the Burst WRITE processing
are provided. The Byte WRITE processing takes 4 instructions which is consist of
the 16-bit Address, the 1-bit OP code(0x1), the 15-bit Data length and 8-bit Data.
Otherwise, The Burst WRITE processing only takes the Data instruction after thesetting of the Burst WRITE processing. To distinguish between the Byte WRITE andthe Burst WRITE processing, the Data length is used. If the Data length is ‘1,’ theByte WRITE processing is operated. Otherwise, the Burst WRITE Processing isoperated when the Data length is more than two. The MOSI pin should be selectedby driving MOSI low after the falling edge of the nSS.

< Write Sequence >WIZ820io User Manual (WIZnet Co., Ltd.)

9

/* Pseudo Code for Write data of 8bit per packet */#define data_write_command
uint16 addr;
int16 data_len;

0x80// Address : 16bits// Data length :15bits

uint8 data_buf[]; // Array for data{
SpiSendData();//Send data from MCU to W5200

ISR_DISABLE();// Interrupt Service Routine disable
CSoff();// CS=0, SPI start
SpiSendData(((addr+idx) & 0xFF00) >> 8);
SpiSendData((addr+idx) & 0x00FF);// Address byte 1// Address byte 2// Data write command + Data length upper 7bits
SpiSendData((data_write_command | ((data_len& 0x7F00) >> 8)));// Data length bottom 8bits
SpiSendData((data_len& 0x00FF));// Write data: On data_len> 1, Burst Write Processing Mode.
for(int idx = 0; idx<data_len; idx++)
SpiSendData(data_buf[idx]);
CSon(); // CS=1, SPI end
IINCHIP_ISR_ENABLE(); // Interrupt Service Routine disable}

WIZ820io User Manual (WIZnet Co., Ltd.)10

4. Timing diagram
4.1 Reset Timing

TRC

nRST

TPL

PLOCK(Internal)

SymbolDescription

MinMaxTRC

Reset Cycle Time

2 us

-TPL

nRST internal PLOCK-150 ms

WIZ820io User Manual (WIZnet Co., Ltd.)11

4.2 SPI Timing

SymbolDescription

MinMaxUnits80MHzFSCKSCK Clock Frequency

TWH

SCK High Time

6nsTWLSCK Low Time

6nsTCSnSCS High Time

5nsTCSSnSCS Hold Time

5TCSH

nSCS Hold Time

5ns

TDS

Data In Setup Time

3ns

TDH

Data In Hold Time

3ns

TOV

Output Valid Time

TOH

Output Hold Time

TCHZ

nSCS High to Output Hi-Z

WIZ820io User Manual (WIZnet Co., Ltd.)-50nsnsns

5ns12

5. Dimensions

SymbolDimension(mm)SymbolDimension(mm)

A

23.00

G

1.34

B

20.32 (2.54 x 8)

H

2.50 (+/- 0.50)

C

1.34

I

6.40

D

2.11J

2.54

E

16.10

K

5.80

F

2.11

L

25.00

WIZ820io User Manual (WIZnet Co., Ltd.)13

6. Reference Schematics

WIZ820io User Manual (WIZnet Co., Ltd.)14

7. Warranty
WIZnet Co., Ltd offers the following limited warranties applicable only to theoriginal purchaser. This offer is non-transferable.

WIZnet warrants our products and its parts against defects in materials andworkmanship under normal use for period of standard ONE(1) YEAR for theWIZ820io module and labor warranty after the date of original retail purchase.
During this period, WIZnet will repair or replace a defective products or part free ofcharge.

Warranty Conditions:
1. The warranty applies only to products distributed by WIZnet or our officialdistributors.
2. The warranty applies only to defects in material or workmanship as
mentioned above in 3.Warranty. The warranty applies only to defects which
occur during normal use and does not extend to damage to products orparts which results from alternation, repair, modification, faulty installationor service by anyone other than someone authorized by WIZnet Co., Ltd. ;damage to products or parts caused by accident, abuse, or misuse, poor
maintenance,mishandling,misapplication,orusedinviolation

ofinstructions furnished by us ; damage occurring in shipment or any damage
caused by an act of God, such as lightening or line surge.

Procedure for Obtaining Warranty Service
1. Contact an authorized distributors or dealer of WIZnet Co., Ltd. for obtaining
an RMA (Return Merchandise Authorization) request form within theapplicable warranty period.
2. Send the products to the distributors or dealers together with the completed
RMA request form. All products returned for warranty must be carefully
repackaged in the original packing materials.
3. Any service issue, please contact to sales@wiznet.co.kr
WIZ820io User Manual (WIZnet Co., Ltd.)

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