Data Sheet
Programming Interface — Ethernet Controller I210
481
8.17.4 AN Advertisement - PCS_ANADV (0x4218; R/W)
SYNC OK 4 0b
Sync OK.
This bit indicates the current value of Sync OK from the PCS Sync state machine.
Reserved 15:5 0x0
Reserved.
Write 0x0, ignore on read.
AN
COMPLETE
16 0b
AN Complete.
This bit indicates that the AN process has completed.This bit is set when the AN
process reached the Link OK state. It is reset upon AN restart or reset. It is set even if
the AN negotiation failed and no common capabilities were found.
AN PAGE
RECEIVED
17 0b
AN Page Received.
This bit indicates that a link partner's page was received during an AN process.
This bit is cleared on reads.
AN
TIMEDOUT
18 0b
AN Timed Out.
This bit indicates an AN process was timed out. Valid after the AN Complete bit is set.
AN REMOTE
FAULT
19 0b
AN Remote Fault.
This bit indicates that an AN page was received with a remote fault indication during
an AN process.
This bit cleared on reads.
AN ERROR
(RWM)
20 0B
AN Error.
This bit indicates that a AN error condition was detected in SerDes/SGMII mode. Valid
after the AN Complete bit is set.
AN error conditions:
SerDes mode: Both nodes not Full Duplex
SGMII mode: PHY is set to 1000 Mb/s Half Duplex mode.
Software can also force a AN error condition by writing to this bit (or can clear a
existing AN error condition).
This bit is cleared at the start of AN.
Reserved 31:21 0x0
Reserved.
Write 0x0, ignore on read.
Field Bit(s) Initial Value Description
Reserved 4:0 0x0
Reserved.
Write 0, ignore on read.
FDCAP 5 1b
Full Duplex.
Setting this bit indicates that the I210 is capable of full duplex operation. This bit
should be set to 1b for normal operation.
HDCAP (RO) 6 0b
Half Duplex.
This bit indicates that the I210 is capable of half duplex operation. This bit is tied to 0b
because the I210 does not support half duplex in SerDes mode.
ASM 8:7 00b
1
Local PAUSE Capabilities.
The I210'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.
Reserved 11:9 0x0
Reserved.
Write 0x0, ignore on read.
Field Bit(s) Initial Value Description