DP83843 Datasheet, PDF (54/89 Pages) Texas Instruments – PHYTER

8.0 Register Block (Continued)
This register contains the next page information sent by this device to its Link Partner during Auto-Negotiation.
Table 13. Auto-Negotiation Next Page Transmit Register (ANNPTR) Address 07h
Bit
Bit Name
Default
Description
15
NP
0, RW
Next Page Indication:
0 = No other Next Page Transfer desired
1 = Another Next Page desired
14
Reserved
0, RO
Reserved: Writes ignored, read as 0
13
MP
1, RW
Message Page:
1 = Message Page
0 = Unformatted Page
12
ACK2
0, RW
Acknowledge2:
1 = Will comply with message
0 = Cannot comply with message
Acknowledge2 is used by the next page function to indicate that
a device has the ability to comply with the message received.
11
TOG_TX
1, RO
Toggle:
1 = Previous value of transmitted Link Code Word equalled logic
0
0 = Previous value of transmitted Link Code Word equalled logic
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. The ini-
tial value is the inverse of bit 11 in the base Link Code Word
(ANAR), which makes the default value of TOG_TX = 1.
10:0
CODE
001, RW
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 "Un-
formatted Page," and the interpretation is application specific.
The default value of the CODE represents a Null Page as defined
in annex 28C of Clause 28.
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