LU82551IT INTEL [Intel Corporation], LU82551IT Datasheet - Page 71

• Manufacturer Part Number: LU82551IT
• Description: Fast Ethernet PCI Controller
• Manufacturer: INTEL [Intel Corporation]

9.3
9.3.1
9.3.2
Datasheet
Table 31. PHY Unit Status and Control
Table 32. Register 17: PHY Unit Special Control
MDI Register 16:31
Register 16: PHY Unit Status and Control Register
Register 17: PHY Unit Special Control Register
15:14
13
12
11
10
9
8
7:2
1
0
15
14
13
Bit(s)
Bit(s)
Reserved
Carrier Sense
Disconnect
Control
Transmit Flow
Control Disable
Receive De-
Serializer In-Sync
Indication
100BASE-TX
Power-Down
10BASE-T
Power-Down
Polarity
Reserved
Speed
Duplex Mode
Scrambler By-
pass
By-pass 4B/5B
Force Transmit H-
Pattern
Name
Name
These bits are reserved and should be set to 0b
This bit enables the disconnect function.
1 = Disconnect function enabled
0 = Disconnect function disabled
This bit enables Transmit Flow Control
1 = Transmit Flow Control enabled
0 = Transmit Flow Control disabled
This bit indicates receipt status of the 100BASE-TX
receive de-serializer in-sync.
This bit indicates the power state of 100BASE-TX
PHY unit.
1 = Power-Down
0 = Normal operation
This bit indicates the power state of 100BASE-TX
PHY unit.
1 = Power-Down
0 = Normal operation
This bit indicates 10BASE-T polarity.
1 = Reverse polarity
0 = Normal polarity
These bits are reserved and should be set to 0b.
This bit indicates the Auto-Negotiation result.
1 = 100 Mbps
0 = 10 Mbps
1 = Full Duplex
0 = Half Duplex
1 = By-pass Scrambler
0 = Normal operations
0 = Normal operation
1 = Force transmit H-pattern
0 = Normal operation
This bit indicates the Auto-Negotiation result.
1 = 4 bit to 5 bit by-pass
Description
Description
Networking Silicon — 82551IT
Default
000000
Default
00
--
--
--
--
0
0
1
1
0
0
0
RW
RW
RW
RO
RO
RO
RO
RO
RO
RO
RW
RW
RW
R/W
R/W
65