82598EB Datasheet, PDF (409/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - Register Descriptions
4.4.3.13.24Auto Negotiation Control Register – AUTOC (0x042A0; RW)
Field
KX_support
PB
RF
ANPDT
Reserved
ANRXDM
ANRXAT
Reserved
LMS
Bit(s)
31:30
29:28
27
26:25
24
Initial
Value
11b¹
00b¹
0b¹
00b¹
1b¹
Description
The value shown in bits A0:A1 of the Technology Ability field of the auto
negotiation word.
00b: Illegal value.
01b: A0 = 1 A1 = 0. KX supported. KX4 not supported.
10b: A0 = 0 A1 = 1. KX not supported. KX4 supported.
11b: A0 = 1 A1 = 1. KX supported. KX4 supported.
Pause Bits
The value of these bits is loaded to bits D11-D10 of the link code word
(pause data).
Bit 29 is loaded to D11.
This bit is loaded to the RF of the auto negotiation word.
Auto Negotiation Parallel Detect Timer
Configure the parallel detect counters.
00b = 1 ms.
01b = 2 ms.
10b = 5 ms
11b = 8 ms.
Reserved
Must be set to 0b for normal operation.
23
1b¹
22:18
0x3¹
17:16
15:13
00b¹
001b¹
Auto Negotiation RX Drift Mode
Enable following the drift caused by PPM in the RX data.
0b = Disable drift mode.
1b = Enable drift mode.
Auto Negotiation RX Align Threshold
Set threshold to determine alignment is stable.
Reserved
Link Mode Select
Selects the active link mode:
000b = 1 Gb/s link (no auto negotiation).
001b = 10 Gb/s link (no auto negotiation).
010b = 1 Gb/s link with clause 37 auto negotiation enable.
011b = Reserved.
100b = KX4/KX auto negotiation disable. 1 Gb/s (Clause 37) auto
negotiation disable.
101b = Reserved.
110b = KX4/KX auto negotiation enable. 1 Gb/s (Clause 37) auto
negotiation enable.
111b = Reserved.
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