vt83c572 ETC-unknow, vt83c572 Datasheet - Page 5

• Manufacturer Part Number: vt83c572
• Description: Pci To Usb Controller
• Manufacturer: ETC-unknow

USB I/O Registers (UHCI v1.1 Compliant)
VIA Technologies, Inc.
Offset
41
42-5F
60
C0-C1
1-0
3-2
5-4
7-6
B-8
0C
11-10
13-12
bit 1:
bit 0:
bit7-3: reserved
bit 2:
bit 1:
bit 0:
Misc. Control Register 2
0 - Disable USB power management
1 - Enable USB power management
DMA Option
0 - 16DW burst access
1 - 8DW burst access
PCI Wait State
0 - Zero wait
1 - One wait
Trap Option
0 - Set trap 60/64 status bits without checking enable bits.
1 - Set trap 60/64 status bits only when trap 60/64 enable bits are set.
A20gate Pass Through Option
0 - Pass through A20GATE command sequence defined in UHCI.
1 - Don’t pass through Write I/O port 64
reserved
reserved
Function
Serial Bus Release Number
Legacy Support Register (compliant with UHCI v1.1 specification)
USB Command
USB Status
USB Interrupt Enable
Frame Number
Frame List Base Address
Start Of Frame Modify
Port 1 Status/Control
Port 2 Status/Control
Default=2000h
-3-
fixed at 10h
VT83C572