RTL8208B-LF/RTL8208BF-LF
Datasheet
6.6. Register5: Auto-Negotiation Link Partner Ability
This register contains the advertised abilities of the Link Partner as received during auto negotiation. The
content changes after successful auto negotiation.
Table 16. Register5: Auto-Negotiation Link Partner Ability
Reg. bit Name
Description
Type
Default
5.15
5.14
5.13
Next Page
1: Link partner desires Next Page transfer
0: Link partner does not desire Next Page transfer
1: Link Partner acknowledges reception of FLP words
0: No acknowledgement by Link Partner
1: Remote Fault indicated by Link Partner
0: No remote fault indicated by Link Partner
Reserved.
1: Asymmetric Flow control supported by Link Partner
0: No Asymmetric flow control supported by Link Partner
When auto-negotiation is enabled, this bit reflects Link
Partner ability (read only).
RO
0
Acknowledge
Remote Fault
RO
RO
0
0
5.12
5.11
Reserved
Asymmetric Pause
RO
RW
0
0
In 100FX mode, this bit is set by FX_ASY_PAUSE or SMI.
1: Flow control supported by Link Partner
0: No flow control supported by Link Partner
When auto-negotiation is enabled, this bit reflects Link
Partner ability (read only).
5.10
Pause
RW
0
In 100FX mode, this bit is set by FX_PAUSE or SMI.
1: 100Base-T4 supported by Link Partner
0: 100Base-T4 not supported by Link Partner
1: 100Base-TX full duplex supported by Link Partner
0: 100Base-TX full duplex not supported by Link Partner
For 100FX mode, this bit is set when Reg.0.8=1 or
FX_DUPLEX =1.
5.9
5.8
100Base-T4
RO
RO
0
0
100Base-TX-FD
When auto-negotiation is disabled, this bit is set when
Reg.0.13=1 and Reg.0.8=1.
5.7
100Base-TX
1: 100Base-TX half duplex supported by Link Partner
0: 100Base-TX half duplex not supported by Link Partner
For 100FX mode, this bit is set when Reg.0.8=0 or
FX_DUPLEX =0.
RO
0
When auto-negotiation is disabled, this bit is set when
Reg.0.13=1 and Reg.0.8=0.
5.6
5.5
10Base-T-FD
10Base-T
1: 10Base-TX full duplex supported by Link Partner
0: 10Base-TX full duplex not supported by Link Partner
When auto-negotiation is disabled, this bit is set when
Reg.0.13=0 and Reg.0.8=1.
1: 10Base-TX half duplex supported by Link Partner
0: 10Base-TX half duplex not supported by Link Partner
When auto-negotiation disabled, this bit is set when
Reg.0.13=0 and Reg.0.8=0.
RO
RO
RO
0
0
5.[4:0]
Selector Field
[00001]=IEEE 802.3.
00001
Note: The values are only guaranteed to be valid once auto-negotiation has successfully completed, as indicated by bit 5
of the MII Status Register.
Single-Chip Octal 10/100-TX/FX PHY Transceiver
21
Track ID: JATR-1076-21 Rev. 1.3
REALTEK [ Realtek Semiconductor Corp. ]
