82551IT Datasheet, PDF (69/102 Pages) Intel Corporation – Fast Ethernet PCI Controller

Networking Silicon — 82551IT
Table 25. Register 1: Status
Bit(s)
Name
Description
3
Auto-Negotiation 1 = PHY is able to perform Auto-Negotiation
Ability
2
Link Status
1 = Valid link has been established
0 = Invalid link detected
1
Jabber Detect
1 = Jabber condition detected
0 = No jabber condition detected
0
Extended
Capability
1 = Extended register capabilities enabled
Default
1
R/W
RO
0
RO
LL
0
RO
LH
1
RO
9.1.3
Register 2: PHY Identifier Register
Table 26. Register 2: PHY Identifier
Bit(s)
Name
15:0 PHY ID (high
byte)
Value: 02A8h
Description
Default
--
R/W
RO
9.1.4
Register 3: PHY Identifier Register
Table 27. Register 3 PHY Identifier
Bit(s)
Name
15:0 PHY ID (low byte) Value: 0154h
Description
Default
--
R/W
RO
9.1.5
Register 4: Auto-Negotiation Advertisement Register
Table 28. Register 4: Auto-Negotiation Advertisement
Bit(s)
Name
Description
Default R/W
15
Next Page
Constant 0 = Transmitting primary capability data
page
0
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 Technology Ability Field is an 8-bit field containing
00101111 RW
Field
information indicating supported technologies specific
to the selector field value.
4:0
Selector Field
The Selector Field is a 5-bit field identifying the type of 00001 RO
message to be sent via Auto-Negotiation. This field is
read only in the 82551IT and contains a value of
00001b, IEEE Standard 802.3.
Datasheet
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