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This register contains additional Local Device and Link Partner status information.

Table 13. Auto-Negotiation Link Partner Ability Register (ANLPAR) Next Page, address 0x05

Bit

Bit Name

Default

Description

0, RO

Next Page Indication:

1 = Link Partner desires Next Page Transfer.

0 = Link Partner does not desire 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. Software

should not attempt to write to this bit.

0, RO

Message Page:

1 = Message Page.

0 = Unformatted Page.

ACK2

0, RO

Acknowledge 2:

1 = Link Partner does have the ability to comply to next page mes-

sage.

0 = Link Partner does not have the ability to comply to next page

message.

Toggle

0, RO

Toggle:

1 = Previous value of the transmitted Link Code word equalled 0.

0 = Previous value of the transmitted Link Code word equalled 1.

10:0

CODE

<000 0000 0000>,

Code:

This field represents the code field of the next page transmission.

If the MP bit is set (bit 13 of this register), then the code shall be

interpreted as a “Message Page”, as defined in annex 28C of

Clause 28. Otherwise, the code shall be interpreted as an “Unfor-

matted Page”, and the interpretation is application specific.

Table 14. Auto-Negotiate Expansion Register (ANER), address 0x06

Bit

Bit Name

Default

Description

15:5

RESERVED

0, RO

RESERVED: Writes ignored, Read as 0.

PDF

0, RO

Parallel Detection Fault:

1 = A fault has been detected via the Parallel Detection function.

0 = A fault has not been detected.

LP_NP_ABLE

0, RO

Link Partner Next Page Able:

1 = Link Partner does support Next Page.

0 = Link Partner does not support Next Page.

NP_ABLE

1, RO/P

Next Page Able:

1 = Indicates local device is able to send additional “Next Pages”.

PAGE_RX

0, RO/COR

Link Code Word Page Received:

1 = Link Code Word has been received, cleared on a read.

0 = Link Code Word has not been received.

LP_AN_ABLE

0, RO

Link Partner Auto-Negotiation Able:

1 = indicates that the Link Partner supports Auto-Negotiation.

0 = indicates that the Link Partner does not support Auto-Negotia-

tion.

DP83847 Datasheet(PDF) 35 Page - National Semiconductor (TI)

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