Product specifications

VT8235 V-Link South Bridge
Revision 1.22 October 24, 2002 -27- Register Overview
Device 16 Function 3 Registers – USB 2.0 EHCI Ports 0-5
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
3104
RO
5-4 Command 0000
RW
7-6 Status
0210 WC
8 Revision ID
nn
RO
9 Programming Interface
20
RO
A Sub Class Code
03
RO
B Base Class Code
0C
RO
C Cache Line Size 00
RW
D Latency Timer
16 RW
E-F -reserved- 00 —
13-10 EHCI Mem Mapped I/O Base Addr 0000 0000
RW
14-2B -reserved- 00 —
2D-2C Sub Vendor ID
1106
RO†
2F-2E Sub Device ID
3104
RO†
30-33 -reserved- 00 —
34 Power Management Capabilities
80
RO
35-3B -reserved- 00 —
3C Interrupt Line 00
RW
3D Interrupt Pin
04
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 00 RW
41-47 -reserved- (Do Not Program) 00 —
48 USB Miscellaneous Control 5
A0
RW
49 USB Miscellaneous Control 6
20
RW
4A-4B -reserved- (Do Not Program) 00 —
4C-4F -reserved- 00 —
50-57 -reserved- (test, do not program) 00
—
58-5D -reserved- (Do Not Program) 00 —
5E-5F -reserved- 00 —
60 USB Serial Bus Release Number
20 RO
61 Frame Length Adjust
20
RW
63-62 Port Wake Capability
0001
RW
64-67 -reserved- 00 —
6B-68 Legacy Support Extended Capability
0000 0001
RW
6F-6C Legacy Support Control / Status 0000 0000 RW
70-83 -reserved- 00 —
84 PM Capability Status 00 RW
85-FF -reserved- 00 —
Memory Mapped I/O Registers – USB EHCI
Offset
EHCI Ca
p
abilities Default Acc
00 Capability Register Length 00 RW
01 -reserved- 00 —
03-02 Interface Version Number
0100
RO†
07-04 Structure Parameters
0000 3206
RO†
0B-08 Capability Parameters
0000 6872
RO†
0C-0F -reserved- 00 —
† RW if Rx42[4] = 1.
Offset
Host Controller Operation
Default Acc
13-10 USB Command 0000 0000 RW
17-14 USB Status 0000 0000 RW
1B-18 USB Interrupt Enable 0000 0000 RW
1F-1C USB Frame Index 0000 0000 RW
23-20 4G Segment Selector 0000 0000 RW
27-24 Frame List Base Address 0000 0000 RW
2B-28 Next Asynchronous List Address 0000 0000 RW
2C-4F -reserved- 00 —
53-50 Configured Flag Register 0000 0000 RW
57-54 Port 1 Status / Control 0000 0000 RW
5B-58 Port 2 Status / Control 0000 0000 RW
5C-FF -reserved- 00 —