82598EB Datasheet, PDF (411/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - Register Descriptions
4.4.3.13.25Link Status Register – LINKS (0x042A4; RO)
Field
KX/KX4 AN Completed
Link Up
Link Speed
Reserved
Reserved
Reserved
10G link Enabled (XGXS)
1G link Enabled PCS_1G
1G AN enabled (clause 37
AN)
KX/KX4 AN Receiver Idle
1G Sync Status
10G Align Status
10G lane sync_status
Transmit Local Fault
Bit(s)
Initial
Value
Description
31
0b
Indicate
KX/KX4 auto negotiation has completed successfully.
30
0b
Link Up.
1b = Link is up.
0b = Link is down.
29
1b
Speed of the MAC link.
1b = 10 Gb/s link speed.
0b = 1 Gb/s link speed.
28:27
01b
Reserved
26:25
01b
Reserved
24:23
01b
Reserved
22
0b
XGXS Enabled for 10 Gb/s operation.
21
0b
PCS_1G Enabled for 1 Gb/s operation.
20
0b
PCS_1 Gb/s auto negotiation is enabled (clause 37).
19
0b
18
1b
17
1b
16:13
1b
12
1b
KX/KX4 Auto Negotiation RX Idle
0b = Receiver is operational.
1b = Receiver is in idle- waiting to align and sync on DME.
1G sync_status
0b = Sync_status is not synchronized to code-group.
1b = Sync_status is synchronized to code-group.
10 Gb/s align_status
0b = Align_status is not operational (deskew process not complete).
1b = Align_status is operation (all lanes are synchronized and aligned).
10 Gb/s sync_status of the lanes.
Bit[16,15,14,13] show lane <3,2,1,0> status accordingly.
per each bit:
0b = Sync_status is not synchronized to code-group.
1b = Sync_status is synchronized to code-group.
XGXS Local Fault Sequences Transmission
0b = LF is not transmitted.
1b = LF is now transmitted.
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