AC101L-DS01-R datasheet(23/54 Pages) BOARDCOM

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Preliminary Data Sheet

AC101L

8/9/04

B roa dcom Co rpo rat ion

Document

AC101L-DS06-R

Page 13

Sec t i on 5: Re gi st er D e sc r i pti o n

The first 7 registers of the MII register set are defined by the MII specification. In addition to these required registers there

are several registers specific to Altima Communications Inc. There are reserved registers and/or bits that are for Altima

internal use only. The following standard registers are supported (register numbers are in decimal notation; the values are

in hexadecimal notation):

Legend:

•

RW = Read and write access

•

SC = Self-clearing

•

LL = Latch low until cleared by reading

•

RO = Read-only

•

RC = Cleared on read

•

LH = Latch high until cleared by reading

TP PHY REGISTER SUMMARY

When writing to registers, it is recommended that a read/modify/write operation be performed, as

unintended bits may get set to unwanted states. This applies to all registers, including those with reserved

bits.

Table 4: TP PHY Register Summary

Description

Default Value

Registers 0–7

Control register

3000

Status register

7849

PHY Identifier 1 register

0022

PHY Identifier 2 register

5521

Auto-Negotiation Advertisement register

01E1

Auto-Negotiation Link Partner Ability register

0001

Auto-Negotiation Expansion register

0004

Next Page Advertisement register

2001

Registers 8–31

8–15

Reserved

XXXX

BT and Interrupt Level Control register

1800

Interrupt Control/Status register

0000

18,19

Reserved

XXXX

Cable Measurement Capability register

XXXX

Receive Error Counter register

0304

22–31

Reserved

XXXX

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