AM79C984 datasheet(23/44 Pages) AMD

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P R E L I M I N A R Y

Am79C984A

Table 5. Control Port Command Summary

Commands

SI Data

SO Data

Set (Write Commands)

eIMR Chip Programmable Options

0000 10S0

Alternate AUI Partitioning Algorithm

0001 1111

Alternate TP Partitioning Algorithm

0001 0000

AUI Port Disable

0010 1111

AUI Port Enable

0011 1111

TP Port Disable

0010 00##

TP Port Enable

0011 00##

Disable Link Test Function (per TP port)

0100 00##

Enable Link Test Function (per TP port)

0101 00##

Disable Link Pulse (per TP port)

0100 10##

Enable Link Pulse (per TP port)

0101 10##

Disable Automatic Receiver Polarity Reversal

(per TP port)

0110 00##

Enable Automatic Receiver Polarity Reversal

(per TP port)

0111 00##

Disable Receiver Extended Distance Mode

(per TP port)

0110 10##

Enable Receiver Extended Distance Mode

(per TP port)

0111 10##

Disable Software Override of LEDs

(per Port - AUI & TP)

1001 ####

Enable Software Override of Bank A LEDs

(per Port - AUI & TP, Global)

1011 ####

Enable Software Override of Bank B LEDs

(per Port - AUI & TP, Global)

1100 ####

Software Override LED Blink Rate

1110 1###

Get (Read Commands)

AUI Port Status (B, S, and L Cleared)

1000 1111

PBSL 0000

AUI Port Status (B Cleared)

1000 1101

PBSL 0000

AUI Port Status (S, L, Cleared)

1000 1011

PBSL 0000

AUI Port status (None Cleared)

1000 1001

PBSL 0000

TP Port Partitioning Status

1000 0000

0000 C3..C0

Bit Rate Error Status of TP Ports

1010 0000

0000 E3..E0

Link Test Status of TP Ports

1101 0000

0000 L3..L0

Receive Polarity Status of TP Ports

1110 0000

0000 P3..P0

MJLP Status

1111 0000

M000 0000

Version

1111 1111

0000 0011

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