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This register contains the advertised abilities of the Link Partner as received during Auto-Negotiation. The content

changes after the successful autonegotiation if Next-pages are supported.

Table 12. Auto-Negotiation Link Partner Ability Register (ANLPAR) (BASE Page), address 0x05

Bit

Bit Name

Default

Description

0, RO

Next Page Indication:

0 = Link Partner does not desire Next Page Transfer.

1 = Link Partner desires Next Page Transfer.

ACK

0, RO

Acknowledge:

1 = Link Partner acknowledges reception of the ability data word.

0 = Not acknowledged.

The Device's Auto-Negotiation state machine will automatically

control the this bit based on the incoming FLP bursts.

0, RO

Remote Fault:

1 = Remote Fault indicated by Link Partner.

0 = No Remote Fault indicated by Link Partner.

12:10

RESERVED

0, RO

RESERVED for Future IEEE use:

Write as 0, read as 0.

9T4

0, RO

100BASE-T4 Support:

1 = 100BASE-T4 is supported by the Link Partner.

0 = 100BASE-T4 not supported by the Link Partner.

8TX_FD

0, RO

100BASE-TX Full Duplex Support:

1 = 100BASE-TX Full Duplex is supported by the Link Partner.

0 = 100BASE-TX Full Duplex not supported by the Link Partner.

7TX

0, RO

100BASE-TX Support:

1 = 100BASE-TX is supported by the Link Partner.

0 = 100BASE-TX not supported by the Link Partner.

10_FD

0, RO

10BASE-T Full Duplex Support:

1 = 10BASE-T Full Duplex is supported by the Link Partner.

0 = 10BASE-T Full Duplex not supported by the Link Partner.

510

0, RO

10BASE-T Support:

1 = 10BASE-T is supported by the Link Partner.

0 = 10BASE-T not supported by the Link Partner.

4:0

Selector

<0 0000>, RO

Protocol Selection Bits:

Link Partner’s binary encoded protocol selector.

DP83847 Datasheet(PDF) 34 Page - National Semiconductor (TI)

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