RTL8100C & RTL8100CL
Datasheet
5.30. Auto-Negotiation Expansion Register
(Offset 006Ah-006Bh, R)
This register contains additional NWay auto-negotiation status information.
Table 30. Auto-Negotiation Expansion Register
Bit
15-5
4
Name
-
MLF
Description/Usage
Reserved. These bits are always set to 0.
Multiple Link Fault.
Default/Attribute
-
0, RO
1: Fault occurred
0: No fault occurred
3
LP_NP_ABLE
Status indicating whether the link partner supports Next Page
negotiation.
0, RO
1: Supported
0: Not supported
2
1
NP_ABLE
PAGE_RX
This bit indicates whether the local node is able to send
additional Next Pages.
This bit is set when a new Link Code Word Page has been
received. The bit is automatically cleared when the auto
negotiation link partner’s ability register (register 5) is read.
0, RO
0, RO
0
LP_NW_ABLE 1: Link partner supports NWay auto negotiation.
0, RO
5.31. Disconnect Counter
(Offset 006Ch-006Dh, R)
Table 31. Disconnect Counter
Description/Usage
Bit
Name
Default/Attribute
15-0
DCNT
This 16-bit counter increments by 1 for every disconnect event. It
rolls over when full. It is cleared to zero by a read command.
h'[0000], R
5.32. False Carrier Sense Counter (Offset 006Eh-006Fh, R)
This counter provides information required to implement the ‘FalseCarriers’ attribute within the MAU
managed object class, Clause 30 of the IEEE 802.3u specification.
Table 32. False Carrier Sense Counter
Bit
Name
Description/Usage
Default/Attribute
15-0
FCSCNT
This 16-bit counter increments by 1 for each false carrier event.
It is cleared to zero by a read command.
h'[0000], R
Single-Chip Fast Ethernet Controller
32
Track ID: JATR-1076-21 Rev. 1.06
ETC [ ETC ]
