82598EB Datasheet, PDF (397/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - Register Descriptions
TOGGLE
CODE
11
10:0
0b
Toggle
This bit is used to ensure synchronization 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. The initial value of the Toggle bit in the
first next page transmitted is the inverse of bit 11 in the base Link Code Word
and therefore might assume a value of 0b or 1b. The Toggle bit is set as follows:
0b = Previous value of the transmitted Link Code Word equaled 1b.
1b = Previous value of the transmitted Link Code Word equaled 0b.
0x0
Message/Unformatted Code Field
The Message Field is a 11-bit wide field that encodes 2048 possible messages.
Unformatted Code Field is a 11-bit wide field that might contain an arbitrary
value.
4.4.3.13.7 PCS_1G Auto Negotiation LP's Next Page Register – PCS1GANLPNP
(0x04224; RO)
Field
Reserved
NXTPG
ACK
MSGPG
ACK2
TOGGLE
CODE
Bit(s)
31:16
15
14
13
12
11
10:0
Initial
Value
Description
0x0
Reserved
0b
Next Page
This bit is used to indicate whether or not this is the last next page to be
transmitted. The encodings are:
0b = Last page.
1b = Additional next pages follow.
0b
Acknowledge
The link partner has acknowledge next page reception.
0b
Message Page
This bit is used to differentiate a message page from an unformatted page. The
encodings are:
0b = Unformatted page.
1b = Message page.
0b
Acknowledge
Acknowledge is used to indicate that the 82598 has successfully received its link
partners' Link Code Word.
0b
Toggle
This bit is used to ensure synchronization 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. The initial value of the Toggle bit in the first
next page transmitted is the inverse of bit 11 in the base Link Code Word and
therefore might assume a value of 0b or 1b. The Toggle bit is set as follows:
0b = Previous value of the transmitted Link Code Word equaled 1b.
1b = Previous value of the transmitted Link Code Word equaled 0b.
0x0
Message/Unformatted Code Field
The Message Field is a 11-bit wide field that encodes 2048 possible messages.
Unformatted Code Field is a 11-bit wide field that might contain an arbitrary value.
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