TLK110 Datasheet, PDF (55/104 Pages) Texas Instruments – Industrial Temp, Single Port 10/100Mbs Ethernet Physical Layer

TLK110
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SLLS901A – DECEMBER 2011 – REVISED FEBRUARY 2012
8.1.8 Auto-Negotiate Next Page Transmit Register (ANNPTR)
This register contains the next page information sent by this device to its Link Partner during Auto-
Negotiation.
Table 8-11. Auto-Negotiation Next Page Transmit Register (ANNPTR), address 0x0007
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 RESERVE
D
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 Local Device has the ability to
comply with the message received.
11 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 synchronize with the Link
Partner during Next Page exchange. This bit always takes the opposite value of the Toggle bit in
the previously exchanged Link Code Word.
10:0 CODE
<000 0000 0001>,
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 is interpreted as a Message Page, as defined in annex 28C of IEEE
802.3u. Otherwise, the code is 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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