AM79C901AVCT datasheet(61/90 Pages) AMD

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Am79C901A

PR ELI M IN AR Y

TBR5: 10BASE-T Auto-Negotiation Link Partner Ability Register (Register 5)

The Auto-Negotiation Link Partner Ability Register is

Read Only. The register contains the advertised ability

of the link partner. The bit definitions represent the re-

ceived link code word. This register contains either the

base page or the link partner’s next pages. The values

contained in these registers are only valid once Auto-

Negotiation has successfully completed, as indicated

by bit 5 in TBR1, or if the Next Page exchange is used

after the Page Received (TBR6, bit 1) has been set to

logic one. See Table 46 and Table 47.

Table 46.

TBR5: 10BASE-T Auto-Negotiation Link Partner Ability Register (Register 5) - Base Page Format

Table 47.

TBR5: 10BASE-T Auto-Negotiation Link Partner Ability Register (Register 5) - Next Page Format

Bits

Name

Description

Read/

Write

Default Value

(hex)

Link partner next page request

Acknowledge

Link partner acknowledgment

Remote Fault

Link partner remote fault request

12:5

Technology Ability

Link partner technology ability field

4:0

Selector Field

Link partner selector field

Bits

Name

Description

Read/

Write

Default Value

(hex)

Link partner next page request

Acknowledge

Link partner acknowledgment

Message Page

Link partner message page request

Acknowledge 2

1 = Link partner can comply with the request

0 = Link partner cannot comply with the request

Toggle

Link partner toggle bit

10:0

Message Field

Link partner’s message code

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