Product specifications
VT8237R Data Sheet
Revision 2.06 December 15, 2004 -35- Register Overview
Device 16 Func 5 Registers – USB Device Communications
Configuration Space USB Device Comm Header Registers
Offset
Confi
g
uration S
p
ace Header Default Acc
1-0 Vendor ID
1106
RO
3-2 Device ID
D104
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
80
RO
B Base Class Code
02
RO
C Cache Line Size 00
RW
D Latency Timer
16 RW
E-F -reserved- 00 —
13-10 UDCI 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
D104
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 Rx41[2] = 1.
Configuration Space USB-Device-Comm-Specific Regs
Offset
USB Device Communications Ctrl Default Acc
40 Miscellaneous Control 1 00 RW
41 Miscellaneous Control 2 00 RW
42 Miscellaneous Control 3 00 RW
43 -reserved- 00 —
44 PHY Signal Monitoring 1 00 RW
45 PHY Signal Monitoring 2 00 RW
46-47 -reserved- 00 —
48 Miscellaneous Control 5
A0
RW
49 Miscellaneous Control 6
60
RW
Offset USB Device Comm MAC Control Default Acc
4A MAC Receiver Enable Delay 00 RW
4B MAC Turnaround Time Delay
09
RW
4C-4F -reserved- 00 —
50 Reserved for Test (Do Not Program) 00 RW
51 USB 2.0 MAC Timeout Parameter
5A
RW
52-57 -reserved- 00 —
Offset USB Device Comm PHY Control Default Acc
58 PHY Control 1 00 RW
59 PHY Control 2
08
RW
5A Hi Speed Port Pad Fine Tune
08
RW
5B -reserved- 00 —
5C PHY Control 3
53
RW
5D-6F -reserved- 00 —
Config Space USB-Device-Comm-Specific Regs (cont)
Offset
USB Device Comm SRAM Control Default Acc
71-70 SRAM Direct Access Address 0000 RW
72 -reserved- 00 —
73 SRAM Direct Access Control 00 RW
77-74 SRAM Direct Access Data 0000 0000 RW
78-7F -reserved- 00 —
Offset USB Device Comm PM Control Default Acc
83-80 Power Management Rx41[1]=0:
Capabilities Rx41[1]=1:
480A0001
C9C20001
RO
RO
84 PM Capabilities Status 00b or 11b
85-EF -reserved- 00 —
Offset USB Device Comm Reserved Regs Default Acc
F0-F4 -reserved- 00 —
F5 Reserved (Do Not Program)
—
RW
F6 Reserved (Do Not Program)
— RO
F7-FB -reserved- 00 —
FC Reserved (Do Not Program)
—
RW
FD-FF -reserved- 00 —
Mem Mapped I/O Regs – USB Dev Ctrlr Interface (UDCI)
Offset
USB Comm Ca
p
abilit
y
& Shadow Default Acc
0 Capability Register Length
10 RO
1 Interface Version
10 RO
3-2 Structure Parameters 1
0121 RO
7-4 Structure Parameters 2
0200 0040 RO
B-8 Structure Parameters 3
0008 0200 RO
F-C EHCI Port 0 Shadow
— RO
Offset USB Device Controller Operation Default Acc
11-10 USB Device Command
0010
RW
13-12 USB Device Status
0010 WC
15-14 USB Device Interrupt Enable 0000 RW
17-16 Device Port Control Status
1000 WC
18 Device Mode Listen Timeout Param
10
RW
19 Host Mode Waiting Timeout Param
10
RW
1A-1F -reserved- 00 —
Offset Device Endpoint Ctrlr Operation Default Acc
23-20 Endpoint 0 Status & Control
0040 0000
RW
37-24 Endpoint 0 Transfer Descriptor
—
RW
38-3F -reserved- 00 —
43-40 Endpoint 1 Status & Control
1200 8000
RW
5B-44 Endpoint 1 Transfer Descriptor
—
RW
5C-5F -reserved- 00 —
63-60 Endpoint 2 Status & Control
2200 8000
RW
7B-64 Endpoint 2 Transfer Descriptor
—
RW
7C-7F -reserved- 00 —
83-80 Endpoint 3 Status & Control
3008 4000
RW
8B-84 Endpoint 3 Transfer Descriptor
—
RW
8C-FF -reserved- 00 —