W5100 datasheet(11/72 Pages) WIZNET

11 / 72 page

High = SPI Mode Enable

If you don’t use SPI mode, then you tied this signal to

‘0’.

SCLK

SPI CLOCK

This pin is used to SPI Clock signal Pin.

/SCS

SPI SLAVE SELECT

This pin is used to SPI Slave Select signal Pin. This pin is

active low

MOSI

SPI MASTER OUT SLAVE IN

This pin is used to SPI MOSI signal pin.

MISO

SPI MASTER IN SLAVE OUT

This pin is used to SPI MISO signal pin.

1.2 PHY Signals

Symbol

Type

Pin No

Description

RXIP

RXIP/RXIN Signal Pair

The differential data from the media is received on

the RXIP/RXIN signal pair.

RXIN

TXOP

TXOP/TXON Signal Pair

The differential data is transmitted to the media on

the TXOP/TXIN signal pair.

TXON

RSET_BG

PHY Off-chip resistor

Connect a resistor of 12.3 ㏀±1% to the ground.

Refer to the “Reference schematic”.

OPMODE2-0

65, 64,

OPERATION CONTROL MODE

[2:0]

Description

000

Auto-negotiation enable with all capabilities

001

Auto-negotiation with 100 BASE- X FDX/HDX ability

010

Auto-negotiation with 10 BASE-T FDX/HDX ability

011

Reserved

100

Manual selection of 100 BASE-TX FDX

101

Manual selection of 100 BASE-TX HDX

110

Manual selection of 10 BASE-T FDX

111

Manual selection of 10 BASE-T HDX

W5100 Datasheet(PDF) 11 Page - WIZnet Co., Ltd

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