Intel 82555 - Manual (Page 34)

82555 — Networking Silicon
30 Datasheet
7.2.1.3 Register 2: 82555 Identifier Register Bit Definitions
7.2.1.4 Register 3: 82555 Identifier Register Bit Definitions
7.2.1.5 Register 4: Auto-Negotiation Advertisement Register Bit Definitions
6 Management
Frames Preamble
Suppression 1 = 82555 will accept management frames with
preamble suppressed
0 = 82555 will not accept management frames with
preamble suppressed
-- RO
5 Auto-Negotiation
Complete 1 = Auto-Negotiation process completed
0 = Auto-Negotiation process has not completed
0 RO
4 Remote Fault 1 = Remote fault condition detected
0 = No remote fault condition detected
0 RO
P
3 Auto-Negotiation
Ability 1 = 82555 is able to perform Auto-Negotiation
0 = 82555 is in repeater mode and Auto-Negotiation
Disable pin is high
1 RO
2 Link Status 1 = Valid link has been established
0 = Invalid link detected
0 RO
LL
SC
1 Jabber Detect 1 = Jabber condition detected
0 = No jabber condition detected
0 RO
LH
SC
0 Extended
Capability 1 = Extended register capabilities enabled
0 = No extended register capabilities
1 RO
Bit(s) Name Description Default R/W
15:0 82555 ID (high
byte) Value: 02A8H -- RO
Bit(s) Name Description Default R/W
15:0 82555 ID (low
byte) Value: 0150H -- RO
Bit(s) Name Description Default R/W
15 Next Page Constant 0 = Transmitting primary capability data
page -- RO
14 Reserved This bit is reserved and should be set to 0b. 0 RO
13 Remote Fault 1 = Indicate link partner’s remote fault
0 = No remote fault
0 RW
12:5 Technology Ability
Field Technology Ability Field is an 8-bit field containing
information indicating supported technologies specific
to the selector field value. -- RW
4:0 Selector Field The Selector Field is a 5-bit field identifying the type of
message to be sent via Auto-Negotiation. This field is
read only in the 82555 and contains a value of
00001b, IEEE Standard 802.3. 00001 RO
Bit(s) Name Description Default R/W