Data Sheet

Ethernet Controller I210 — Programming Interface
482
8.17.5 Link Partner Ability - PCS_LPAB (0x421C; RO)
RFLT 13:12 00b
Remote Fault.
The I210's remote fault condition is encoded in this field. The I210 might indicate a
fault by setting a non-zero remote fault encoding and re-negotiating.
00b = No error, link OK.
01b = Link failure.
10b = Offline.
11b = Auto-negotiation error.
Reserved 14 0x0
Reserved.
Write 0x0, ignore on read.
NEXTP 15 0b
Next Page Capable.
The I210 asserts this bit to request a next page transmission.
The I210 clears this bit when no subsequent next pages are requested.
Reserved 31:16 0x0 Reserved.
1. Loaded from Flash word 0x0F, bits 13:12.
Field Bit(s) Initial Value Description
Reserved 4:0 0x0 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 I210.
These bits are reserved while in SGMII mode.
Reserved 9 0b
Reserved.
Write 0b, ignore on read.
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