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Intel
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82575EB Gigabit Ethernet Controller — Link Partner Ability - PCS_LPAB (0421Ch; RO)
Intel
®
82575EB Gigabit Ethernet Controller 324632-003
Software Developer’s Manual and EEPROM Guide Revision: 2.1
374 January 2011
14.3.80 Link Partner Ability - PCS_LPAB (0421Ch; RO)
Reserved 14 - Reserved
NEXTP 15 0b Next Page Capable
The 82575 asserts this bit to request a next page transmission.
The 82575 clears this bit when no subsequent next pages are requested.
Reserved 31:16 0h Reserved
1. Loaded from EEPROM word 0Fh, bits 13:12.
Field Bit(s)
Initial
Value
Description
Reserved 4:0 - Reserved
LPFD 5 0b LP Full Duplex (SerDes)
When set to 1b, the link partner is capable of full duplex operation. When set to 0b, the
link partner is not capable of full duplex mode.
This bit is reserved while in SGMII mode.
LPHD 6 0b LP Half Duplex (SerDes)
When set to 1b, the link partner is capable of half duplex operation. When set to 0b, the
link partner is not capable of half duplex mode.
This bit is reserved while in SGMII mode.
LPASM 8:7 00b LP ASMDR/LP PAUSE (SerDes)
The link partner's PAUSE capability is encoded in this field.
00b = No PAUSE.
01b = Symmetric PAUSE.
10b = Asymmetric PAUSE to link partner.
11b = Both symmetric and asymmetric PAUSE to the 82575.
These bits are reserved while in SGMII mode.
Reserved 9 - Reserved
SGMII SPEED 11:10 00b SerDes: reserved.
Speed (SGMII): Speed indication from the PHY.
PRF 13:12 00b LP Remote Fault (SerDes)
The link partner's remote fault condition is encoded in this field.
00b = No error, link ok.
10b = Link failure.
01b = Offline.
11b = Auto-negotiation error.
SGMII[13]: Reserved
SGMII[12]: Duplex mode indication from the PHY.
Field Bit(s)
Initial
Value
Description