RTL8100C & RTL8100CL
Datasheet
5.29. Auto-Negotiation Link Partner Ability Register
(Offset 0068h-0069h, R)
This register contains the advertised abilities of the Link Partner as received during Auto-negotiation. If
Next Pages are supported, the content changes after a successful auto-negotiation.
Table 29. Auto-Negotiation Link Partner Ability Register
Bit
Name
Description/Usage
Default/Attribute
15
NP
Next Page bit.
0, RO
1: Transmitting the protocol specific data page
0: Transmitting the primary capability data page
1: Link partner acknowledges reception of local node’s
capability data word
14
ACK
0, RO
13
12-11
10
RF
-
Pause
1: Link partner is indicating a remote fault
Reserved.
0, RO
-
0, RO
1: Flow control supported by link partner
0: Flow control is not supported by link partner
1: 100Base-T4 supported by link partner
0: 100Base-T4 not supported by link partner
1: 100Base-TX full duplex is supported by link partner
0: 100Base-TX full duplex not supported by link partner
1: 100Base-TX supported by link partner
0: 100Base-TX not supported by link partner
1: 10Base-T full duplex supported by link partner
0: 10Base-T full duplex not supported by link partner
1: 10Base-T is supported by link partner
0: 10Base-T not supported by link partner
Link Partner's binary encoded node selector. Currently only
CSMA/CD <00001> is specified.
9
8
T4
TXFD
TX
0, RO
0, RO
7
0, RO
6
10FD
10
0, RO
5
0, RO
4-0
Selector
<00000>, RO
Single-Chip Fast Ethernet Controller
31
Track ID: JATR-1076-21 Rev. 1.06