VT8235 datasheet(134/145 Pages) VIA

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VT8235 V-Link South Bridge

Revision 1.22 October 24, 2002

-128-

Device 18 Function 0 LAN Registers

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Offset 80 – Miscellaneous 1 (00h).....................................RW

7-4

Reserved

........................................ always reads 0

Full Duplex Flow Control

Disable .................................................. default

Enable

Half Duplex Flow Control

Disable .................................................. default

Enable

Soft Timer 0 Status / Start

Timer Counting ..................................... default

(write 0 after time out to start timer counting)

Timer Timed Out

Soft Timer 0 Enable

Disable .................................................. default

Enable timer to count

Offset 81 – Miscellaneous 2 (00h).....................................RW

Reserved

........................................ always reads 0

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.

Normal .................................................. default

Force Reset

Reserved (Do Not Program)

.................... default = 0

4-1

Reserved

........................................ always reads 0

Soft Timer 1 Enable

Disable .................................................. default

Enable timer to count

Offset 83 – Sticky Hardware Control (00h).................... RW

Legacy WOL Status (for software reference) ... RO

This bit reports whether legacy WOL is supported.

The value is usually derived from a jumper switch.

Disable ................................................... default

Enable

6-4

Reserved

........................................always reads 0

Legacy WOL Status ............................................ RO

This bit is set when there is a legacy WOL event.

No legacy WOL event occurred ............ default

Legacy WOL event occurred

Legacy WOL Enable

This bit controls whether legacy WOL is a wake

event.

Disable (if a wake event is detected (bit-3 = 1),

PME# will not be asserted).................... default

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

VT8235 Datasheet(PDF) 134 Page - VIA Technologies, Inc.

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