Data Sheet
© Copyright 2013 WIZnet Co.,Ltd. All rights reserved. 
10
iEthernet 
W5200
If you don’t use SPI mode, in other words, if you want to 
use indirect mode, then you tied this signal to ‘0’. 
This function activate only when reset period. 
(*) These pins are related with indirect interface mode. If you need details, Please refer 
to the W5200_AN_Indirect.pdf file. 
1.2  PHY Signals 
Symbol  Type  Pin No  Description 
RXIP 
I  20  RXIP/RXIN Signal Pair 
The  differential  data  from  the  media  is  received  on 
the RXIP/RXIN signal pair. 
RXIN 
I  21 
TXOP  O  17  TXOP/TXON Signal Pair 
The  differential  data  is  transmitted  to  the  media  on 
the TXOP/TXIN signal pair. 
TXON  O  18 
BIAS  O  12  BIAS Register 
Connect a resistor of 28.7㏀±1% to the ground. 
Refer to the “Reference schematic”. 
ANE  I  29  Auto Negotiation Mode Enable 
This pin  selects  Enable/Disable of  Auto Negotiation 
Mode. 
Low :Auto Negotiation Mode Disable 
High : Auto Negotiation Mode Enable 
A0/DUP  I  30  Full Duplex Mode Enable 
This pin selects Enable/Disable of Full Duplex Mode. 
Low = Half Duplex Mode Enable 
High = Full Duplex Mode Enable 
This function activates only during reset period. 
A1/SPD  I  31  Speed Mode 
This pin selects 100M/10M Speed Mode. 
Low = 10M Speed Mode 
High = 100M Speed Mode 
This function activates only during reset period. 
1.3  Miscellaneous Signals 
Symbol  Type
Pin No  Description 
FDXLEDn/M2 
SPDLEDn/M1 
LINKLEDn/M0 
I  3, 
4, 
5 
W5200 MODE SELECT   
Normal mode    : 111 
Other test modes are internal test mode. 










