AM79C987 datasheet(10/30 Pages) AMD

10 / 30 page

AMD

P R E L I M I N A R Y

Am79C987

For P = 0 (Repeater Registers), the following registers

are accessible:

R[4:0]

Source Address Match (6-byte)

Total Octets (4-byte)

Transmit Collisions (4-byte)

Configuration Register

Version/Device ID

IMR+ Management Port Set Register

IMR+ Management Port Get Register

are read in the least to most significant byte order.

written to in the least to most significant byte order.

Port Status Registers are organized as follows (P = 1):

R[4:0]

TP (Twisted Pair) Ports Partition Status Change

AUI Port Partition Status Change

TP Link Status Change

AUI Loop Back Error

Reserved

AUI SQE Test Error

TP Source Address Change

AUI Source Address Change

TP Source Address Match Status

AUI Source Address Match Status

Port Control Registers are organized as follows (P = 2):

R[4:0]

TP Partition Change Interrupt Enable

AUI Partition Change Interrupt Enable

TP Link Status Change Interrupt Enable

AUI Loop Back Error Interrupt Enable

Reserved

AUI SQE Test Error Interrupt Enable

TP Source Address Change Interrupt Enable

AUI Source Address Change Interrupt Enable

For other valid port numbers (P in the range 16...23 or

31), the following Attribute Registers are available:

R[4:0]

Readable Frames

Readable Octets

Frame Check Sequence Errors

Alignment Errors

Frames Too Long

Short Events

Runts

Collisions

Late Events

Very Long Events

Data Rate Mismatches

Auto Partitions

Source Address Changes

Reserved

Last Source Address

Registers 0 through 12 are 4 bytes long and their con-

tents are read in the least to most significant byte order.

written to in the least to most significant byte order.

Note that the contents of all attribute registers are main-

tained during an external reset. At power up, the values

of all 4- and 6-byte attributes are random.

AM79C987 Datasheet(PDF) 10 Page - Advanced Micro Devices

AM79C987 Datasheet(HTML) 10 Page - Advanced Micro Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Datasheet Descarga

Enlace URL