Product specifications

VT8235 V-Link South Bridge
Revision 1.22 October 24, 2002 -65- Device 17 Function 0 Bus Control Registers
Function Control
Offset 50 – Function Control 1 (09h)...............................RW
7 Device 17 Function 6 MC97
0 Enable.................................................... default
1 Disable
6 Device 17 Function 5 AC97
0 Enable.................................................... default
1 Disable
5 Device 16 Function 1 USB 1.1 UHCI Ports 2-3
0 Enable.................................................... default
1 Disable
4 Device 16 Function 0 USB 1.1 UHCI Ports 0-1
0 Enable.................................................... default
1 Disable
3 Device 17 Function 1 IDE
0 Enable
1 Disable ..................................................default
2 Device 16 Function 2 USB 1.1 UHCI Ports 4-5
0 Enable.................................................... default
1 Disable
1 Device 16 Function 4 USB 2.0 EHCI
0 Enable.................................................... default
1 Disable
0 Internal Audio ..................................................... RO
0 Disable
1 Enable....................................................default
Offset 51 – Function Control 2 (0Dh).............................. RW
7-6 Reserved ........................................always reads 0
5 Internal LAN Controller Clock Gating
When bit-4 of this register is disabled, the LAN
function is disabled but the LAN controller clock is
not gated automatically. This bit controls whether
the clock is actually gated.
0 Disable...................................................default
1 Enable
4 Internal LAN Controller
0 Disable...................................................default
1 Enable
3 Internal RTC
0 Disable
1 Enable...................................................default
2 Internal PS2 Mouse
0 Disable
1 Enable...................................................default
1 Internal KBC Configuration
0 Disable ports 2E / 2F offsets E0-EF ...... default
1 Enable ports 2E / 2F offsets E0-EF
0 Internal KBC
0 Disable
1 Enable...................................................default
0 / Disable 1 / Enable
Pin
(External KBC) (Internal KBC)
AF12 KBCS# ROMCS#
V2 KBRC KBDT
V3 KA20G KBCK
W1 IRQ12 MSDT
W2 IRQ1 MSCK