Product specifications

VT8235 V-Link South Bridge
Revision 1.22 October 24, 2002 -24- Register Overview
Device 16 Function 0 Registers – USB 1.1 UHCI Ports 0-1
Configuration Space USB Header Registers
Offset
Confi
g
uration S
p
ace Header Default Acc
1-0 Vendor ID
1106
RO
3-2 Device ID
3038
RO
5-4 Command 0000
RW
7-6 Status
0210 WC
8 Revision ID
nn
RO
9 Programming Interface 00 RO
A Sub Class Code
03
RO
B Base Class Code
0C
RO
C -reserved- 00 —
D Latency Timer
16 RW
E-1F -reserved- 00 —
23-20 USB I/O Registers Base Port Address
00000301 RW
24-2B -reserved- 00 —
2D-2C Sub Vendor ID
1106
RO†
2F-2E Sub Device ID
3038
RO†
30-33 -reserved- 00 —
34 Power Management Capabilities
80
RO
35-3B -reserved- 00 —
3C Interrupt Line 00
RW
3D Interrupt Pin
01
RO
3E-3F -reserved- 00 —
† RW if Rx42[4] = 1.
Configuration Space USB-Specific Registers
Offset
USB Control
Default Acc
40 USB Miscellaneous Control 1
40
RW
41 USB Miscellaneous Control 2
10
RW
42 USB Miscellaneous Control 3
03
RW
43 USB Miscellaneous Control 4 00 RW
44-47 -reserved- (test, do not program) 00
—
48 USB Miscellaneous Control 5 00 RW
49 USB Miscellaneous Control 6 00 RW
4A USB Miscellaneous Control 7 00 RW
4B-5F -reserved- 00 —
60 USB Serial Bus Release Number
10 RO
61-83 -reserved- 00 —
84 PM Capability Status 00 RW
85-BF -reserved- 00 —
C1-C0 USB Legacy Support
2000
RW
C2-FF -reserved- 00 —
Memory Mapped I/O Registers – USB Controller
Offset
USB I/O Re
g
isters Default Acc
1-0 USB Command 0000 RW
3-2 USB Status 0000
WC
5-4 USB Interrupt Enable 0000 RW
7-6 Frame Number 0000 RW
B-8 Frame List Base Address 00000000 RW
C Start Of Frame Modify
40
RW
11-10 Port 0 Status / Control
0080 WC
13-12 Port 1 Status / Control
0080 WC
14-1F -reserved- 00 —