VSC8601 Datasheet
Configuration
Table 12.
Device Auto-Negotiation Advertisement, Address 4 (0x04)
Bit
Name
Access Description
Default
12
Reserved
R/W
0
technologies
11
10
9
Advertise
asymmetric pause
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
1 = Advertises asymmetric pause
CMODE
CMODE
0
Advertise symmetric
pause
1 = Advertises symmetric pause
1 = Advertises 100BASE-T4
Advertise
100BASE-T4
8
Advertise
100BASE-TX FDX
1 = Advertise 100BASE-TX FDX
1 = Advertises 100BASE-TX HDX
1 = Advertises 10BASE-T FDX
1 = Advertises 10BASE-T HDX
CMODE
CMODE
CMODE
CMODE
00001
7
Advertise
100BASE-TX HDX
6
Advertise
10BASE-T FDX
5
Advertise
10BASE-T HDX
4:0
Advertise selector
4.2.5
Link Partner Auto-Negotiation Capability
The bits in main register 5 enable you to determine if the Cat5 link partner (LP) used
with the VSC8601 device is compatible with the auto-negotiation functionality.
Table 13.
Auto-Negotiation Link Partner Ability, Address 5 (0x05)
Bit
Name
Access Description
Default
15
LP next page
transmission
request
RO
1 = Requested
0
14
13
12
11
LP acknowledge
LP remote fault
Reserved
RO
RO
RO
RO
1 = Acknowledge
1 = Remote fault
0
0
0
0
LP advertise
asymmetric pause
1 = Capable of asymmetric pause
1 = Capable of symmetric pause
1 = Capable of 100BASE-T4
10
9
LP advertise
symmetric pause
RO
RO
RO
RO
RO
RO
RO
0
LP advertise
100BASE-T4
0
8
LP advertise
100BASE-TX FDX
1 = Capable of 100BASE-TX FDX
1 = Capable of 100BASE-TX HDX
1 = Capable of 10BASE-T FDX
1 = Capable of 10BASE-T HDX
0
7
LP advertise
100BASE-TX HDX
0
6
LP advertise
10BASE-T FDX
0
0
5
LP advertise
10BASE-T HDX
4:0
LP advertise selector
00000
Revision 4.1
September 2009
Page 42
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