Product specifications

VT8235 V-Link South Bridge
Revision 1.22 October 24, 2002 -128- Device 18 Function 0 LAN Registers
Offset 80 – Miscellaneous 1 (00h).....................................RW
7-4 Reserved ........................................ always reads 0
3 Full Duplex Flow Control
0 Disable .................................................. default
1 Enable
2 Half Duplex Flow Control
0 Disable .................................................. default
1 Enable
1 Soft Timer 0 Status / Start
0 Timer Counting ..................................... default
(write 0 after time out to start timer counting)
1 Timer Timed Out
0 Soft Timer 0 Enable
0 Disable .................................................. default
1 Enable timer to count
Offset 81 – Miscellaneous 2 (00h).....................................RW
7 Reserved ........................................ always reads 0
6 Force Software Reset
Setting this bit resets the MAC. This bit functions
differently from Rx09[7] in that when Rx09[7] is set,
the MAC will reset only after all state machines are
in idle mode (all on-going transactions have been
completed). When this bit is set, the MAC will be
reset regardless of the status of the state machines.
This bit is used when Rx09[7] cannot force a reset
due to issues with the state machines.
0 Normal .................................................. default
1 Force Reset
5 Reserved (Do Not Program).................... default = 0
4-1 Reserved ........................................ always reads 0
0 Soft Timer 1 Enable
0 Disable .................................................. default
1 Enable timer to count
Offset 83 – Sticky Hardware Control (00h).................... RW
7 Legacy WOL Status (for software reference) ...RO
This bit reports whether legacy WOL is supported.
The value is usually derived from a jumper switch.
0 Disable...................................................default
1 Enable
6-4 Reserved ........................................always reads 0
3 Legacy WOL Status ............................................RO
This bit is set when there is a legacy WOL event.
0 No legacy WOL event occurred ............default
1 Legacy WOL event occurred
2 Legacy WOL Enable
This bit controls whether legacy WOL is a wake
event.
0 Disable (if a wake event is detected (bit-3 = 1),
PME# will not be asserted)....................default
1 Enable (if a wake event is detected (bit-3 = 1),
PME# will be asserted)
1-0 Sticky DS Shadow
This field reports the current power management
state of the device.
00 D0 State .................................................default
01 D1 State
10 D2 State
11 D3 State