DP83867CS datasheet(55/114 Pages) TI1

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DP83867CS, DP83867IS, DP83867E

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SNLS504 – OCTOBER 2015

9.6.9 Auto-Negotiation Next Page Receive Register (ANNPRR)

This register contains the next page information sent by the Link Partner during Auto-Negotiation.

Table 19. Auto-Negotiation Next Page Transmit Register (ANNPTR), Address 0x0008

BIT

BIT NAME

DEFAULT

DESCRIPTION

0, RW

Next Page Indication:

0 = No other Next Page Transfer desired by the link partner.

1 = Another Next Page desired by the link partner.

ACK

0, RO

Acknowledge:

1 = Acknowledge reception of link code word by the link partner.

0 = Link partner does not acknowledge reception of link code word.

1, RW

Message Page:

1 = Received page is a Message Page.

0 = Received page is an Unformatted Page.

ACK2

0, RW

Acknowledge2:

1 = Link partner sets the ACK2 bit.

0 = Link partner coes not set the ACK2 bit.

Acknowledge2 is used by the next page function to indicate that link

partner has the ability to comply with the message received.

TOG_TX

0, RO

Toggle:

1 = Value of toggle bit in previously transmitted Link Code Word

was 0.

0 = Value of toggle bit in previously transmitted Link Code Word

was 1.

Toggle is used by the Arbitration function within Auto-Negotiation to

ensure synchronization with the Link Partner during Next Page

exchange. This bit shall always take the opposite value of the

Toggle bit in the previously exchanged Link Code Word.

10:0

CODE

000 0000 0001,

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 IEEE

802.3u. Otherwise, the code shall be interpreted as an "Unformatted

Page”, and the interpretation is application specific.

The default value of the CODE represents a Null Page as defined in

Annex 28C of IEEE 802.3u.

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