82551IT Datasheet, PDF (70/102 Pages) Intel Corporation – Fast Ethernet PCI Controller

82551IT — Networking Silicon
9.1.6
Register 5: Auto-Negotiation Link Partner Ability Register
Table 29. Auto-Negotiation Link Partner Ability
Bit(s)
Name
Description
15
Next Page
This bit reflects the PHY’s link partner’s Auto-
Negotiation ability.
14
Acknowledge
This bit is used to indicate that the 82551IT’s PHY unit
has successfully received its link partner’s Auto-
Negotiation advertising ability.
13
Remote Fault
This bit reflects the PHY’s link partner’s Auto-
Negotiation ability.
12:5 Technology Ability This bit reflects the PHY’s link partner’s Auto-
Field
Negotiation ability.
4:0
Selector Field
This bit reflects the PHY’s link partner’s Auto-
Negotiation ability.
Default
--
R/W
RO
--
RO
--
RO
--
RO
--
RO
9.1.7
Register 6: Auto-Negotiation Expansion Register
Table 30. Register 6: Auto-Negotiation Expansion
Bit(s)
Name
Description
15:5 Reserved
These bits are reserved and should be set to 0b.
4
Parallel Detection 1 = Fault detected via parallel detection (multiple link
Fault
fault occurred)
0 = No fault detected via parallel detection
This bit will self-clear on read
3
Link Partner Next 1 = Link Partner is Next Page able
page Able
0 = Link Partner is not Next Page able
2
Next Page Able 1 = Local drive is Next Page able
0 = Local drive is not Next Page able
1
Page Received 1 = New Page received
0 = New Page not received
This bit will self-clear on read.
0
Link Partner Auto- 1 = Link Partner is Auto-Negotiation able
Negotiation Able _{0 = Link Partner is not Auto-Negotiation able}
Default
0
0
R/W
RO
RO
SC
LH
0
RO
0
RO
0
RO
SC
LH
0
RO
9.2
MDI Registers 8:15
Registers 8 through 15 are reserved for IEEE.
64
Datasheet