VSC8601 Datasheet
Configuration
4.2.13
100BASE-TX Status Extension
Register 16 in the main registers page space of the VSC8601 device provides additional
information about the status of the device’s 100BASE-TX operation.
Table 20.
100BASE-TX Status Extension, Address 16 (0x10)
Bit
Name
Access Description
Default
15
100BASE-TX
descrambler
RO
RO
RO
1 = Descrambler locked.
0
14
13
100BASE-TX lock
error
This is a self-clearing bit.
1 = Lock error detected.
0
0
100BASE-TX
disconnect state
This is a self-clearing bit.
1 = PHY 100BASE-TX link disconnect
detected.
12
11
10
9
100BASE-TX current
link status
RO
RO
RO
RO
RO
RO
1 = PHY 100BASE-TX link active.
0
0
0
0
0
100BASE-TX receive
error
This is a self-clearing bit.
1 = Receive error detected.
100BASE-TX
transmit error
This is a self-clearing bit.
1 = Transmit error detected.
100BASE-TX SSD
error
This is a self-clearing bit.
1 = Start-of-stream delimiter error detected.
8
100BASE-TX ESD
error
This is a self-clearing bit.
1 = End-of-stream delimiter error detected.
7:0
Reserved
4.2.14
1000BASE-T Status Extension 2
The second status extension register is at address 17 in the device main registers
space. It provides information about another set of parameters associated with
1000BASE-T communications. For information about the first status extension register,
see Table 20, page 46. The following table lists the settings available.
Table 21.
1000BASE-T Status Extension 2, Address 17 (0x11)
Bit
Name
Access Description
Default
15
1000BASE-T
descrambler
RO
RO
RO
1 = Descrambler locked.
0
14
13
1000BASE-T lock
error
This is a self-clearing bit.
1 = Lock error detected.
0
0
1000BASE-T
disconnect state
This is a self-clearing bit.
1 = PHY 1000BASE-T link disconnect
detected.
12
11
10
1000BASE-T current
link status
RO
RO
RO
1 = PHY 1000BASE-T link active.
0
0
0
1000BASE-T receive
error
This is a self-clearing bit.
1 = Receive error detected.
1000BASE-T
This is a self-clearing bit.
transmit error
1 = Transmit error detected.
Revision 4.1
September 2009
Page 46
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
