AM79C989JCT 데이터 시트보기 (PDF) - Advanced Micro Devices

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AM79C989JCT

Quad Ethernet Switching Transceiver (QuEST™)

Advanced Micro Devices 

Pin Number

Pin Name

QuASI Interface (Continued)

42

QCLSN

43

QRX_CRS

Management Interface

40

MDC

41

MDIO

Miscellaneous Pins

6

SCLK

7

QRST/STRB

8

REXT

Power Pins

1

VDDIO

44

39

9

14

29, 23, 17

26, 20

34

VSSIO

VDD

VSS

VSSAUI

VDDTX

VSSTX

VSSRX

PRELIMINARY

Pin Type

Pin Description

I/O

Output

Multiplexed collision error

PHYAD 2 internal address input upon reset

Multiplexed receive carrier sense

Input

I/O

Management Interface Clock

Management Interface Data

Input

Input

Input

System Clock for QuASI Interface

Active Low -- Reset and QuASI Channel 0 strobe

External resistor for determining TXD drive levels

VDD1

VSS

VDD

VSS

VSS

VDD

VSS

VSS

1 VDD pin for digital Outputs

(3.3 Volt Capable)

1 VSS pin for digital Inputs/Outputs

1 VDD pin for internal digital logic

1 VSS pin for internal digital logic

1 Analog VSS pin for AUI circuit

3 Analog VDD pins for TXD driver

2 Analog VSS pins for TXD driver

1 Analog VSS pin for 10BASE-T Receivers

PIN DESCRIPTIONS

10BASE-T Signal Pins

TXD0±

10BASE-T Transmit Data Port 0

Output

TXD0± are the 10BASE-T differential data drivers for

port 0.

RXD0±

10BASE-T Receive Data Port 0

Input

RXD0± are the 10BASE-T differential data receivers for

port 0.

TXD1±

10BASE-T Transmit Data Port 1

Output

TXD1± are the 10BASE-T differential data drivers for

port 1.

RXD±

10BASE-T Receive Data Port 1

Input

RXD1± are the 10BASE-T differential data receivers for

port 1.

TXD2±

10BASE-T Transmit Data Port 2

Output

TXD2± are the 10BASE-T differential data drivers for

port 2.

RXD2±

10BASE-T Receive Data Port 2

Input

RXD2± are the 10BASE-T differential data receivers for

port 2.

TXD3±

10BASE-T Transmit Data Port 3

Output

TXD3± are the 10BASE-T differential data drivers for

port 3.

10

Am79C989

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