ST802RT1B datasheet(11/58 Pages) STMICROELECTRONICS

11 / 58 page

ST802RT1A, ST802RT1B

Pin description

Doc ID 17049 Rev 1

11/58

Pin description

Table 2.

Pin description of the ST802RT1x

Pin n°

ST802RT1x

Name

Type

Description

TX_CLK/LPBK_EN

O, S, PD

MII transmit clock

TX_EN

I, PD

MII transmit enable

GNDA

Ground

Analog ground

VCCA

Supply

Analog power supply

TXD0

Transmit data (MII/RMII)

TXD1

Transmit data (MII/RMII)

TXD2/SCLK

Transmit data (MII), RMII clock (50 Mhz)

TXD3/MII_CFG1

I, S, PD

Transmit data (MII) / multi-function pin

PWRDWN/MDINT

I, PU, OD

Power-down/management data interrupt

RESERVED

I, PD

To be set to digital ground

RESERVED

I, PD

To be set to digital ground

GND

Ground

Digital ground

VCCA

Supply

Analog power supply

RXN

I, O

Differential receive inputs

RXP

I, O

Differential receive inputs

GNDA

Ground

Analog ground

TXP

I, O

Differential transmit outputs

TXN

I, O

Differential transmit outputs

GNDA

Ground

Analog ground

GNDA

Ground

Analog ground

IREF

I/O

Reference resistor/ DC regulator output (bias resistor)

VCCA

Supply

Analog power supply

GNDA

Ground

Analog ground

VCCA

Supply

Analog power supply

RESERVED

Not used in the ST802RT1A

SDP

Positive signal detect for 100Base-FX operation (ST802RT1B

only)

LED_ACT/AN_1

O, S, PU

Activity/full-duplex/collision led

LED_SPEED/AN_0

O, S, PU

Speed LED

LED_LINK/AN_EN

O, S, PU

Link LED

RESET

Reset (active-low)

MDIO

I/O, PU

Management data input/output

MDC

Management data clock

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