82598EB Datasheet, PDF (410/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - Register Descriptions
Restart_AN
12
0b¹
Restart KX/KX4 Auto Negotiation process (self-clearing bit)
0b = No action needed.
1b = Restart KX/KX4 auto negotiation.
Field
RATD
D10GMP
1G_PMA_PMD
10G_PMA_PMD
Bit(s)
11
10
9
8:7
Initial
Value
0b¹
0b¹
1b¹
10b¹
Description
Restart Auto Negotiation on Transition to Dx
This bit enables the functionality to restart KX/KX4 auto negotiation
transition to Dx(Dr/D3).
0b = Do not restart auto negotiation when the 82598 moves to the Dx
state.
1b = Restart auto negotiation to reach a low-power link mode (1 Gb/s
link) when the 82598 transitions to the Dx state.
Disable 10 Gb/s (KX4) on Dx(Dr/D3) Without Main Power.
0b = No specific action.
1b = Disable 10 Gb/s when main power is removed. When RATD bit is
also set to 1b, it causes the link mode to disable 10 Gb/s capabilities
and restart auto negotiation (if enabled) when the main-power
(MAIN_PWR_OK) is removed.
PMA/PMD
Used for 1 Gb/s.
0b = BX PMA/PMD.
1b = KX PMA/PMD.
PMA/PMD
Used for 10 Gb/s.
00b = XAUI PMA/PMD.
01b = KX4 PMA/PMD.
10b = CX4 PMA/PMD.
11b = Reserved.
ANSF
ANACK2
6:2
00001b AN Selector
1
This value is used as the Selector field in the link control word during
the clause 73 auto-negotiation process. Note that the default value is
according to 802.3ap draft 2.4 specification.
1
0b¹
AN ACK2
This value is transmitted in the Acknowledge2 field of the null next page
that is transmitted during a next page handshake.
FLU
0
0b
Force Link Up
This setting forces the auto-negotiation arbitration state machine to
AN_GOOD and sets the link-up indication regardless of the XGXS/
PCS_1G status.
0b = Normal mode.
1b = MAC forced to link up. Link is active in the speed configured in
AUTOC.LMS.
1. Loaded from the EEPROM.
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