Product specifications

VT8235 V-Link South Bridge
Revision 1.22 October 24, 2002 -ii- Table Of Contents
TABLE OF CONTENTS
REVISION HISTORY....................................................................................................................................................................... I
TABLE OF CONTENTS..................................................................................................................................................................II
LIST OF FIGURES .........................................................................................................................................................................IV
LIST OF TABLES ...........................................................................................................................................................................IV
PRODUCT FEATURES....................................................................................................................................................................1
OVERVIEW.......................................................................................................................................................................................4
PINOUTS............................................................................................................................................................................................6
PIN DESCRIPTIONS........................................................................................................................................................................9
REGISTERS.....................................................................................................................................................................................21
REGISTER OVERVIEW..................................................................................................................................................................21
REGISTER DESCRIPTIONS............................................................................................................................................................36
Legacy I/O Ports ...................................................................................................................................................................36
Keyboard Controller I/O Registers........................................................................................................................................................ 37
DMA Controller I/O Registers.............................................................................................................................................................. 39
Interrupt Controller I/O Registers ......................................................................................................................................................... 40
Timer / Counter Registers ..................................................................................................................................................................... 40
CMOS / RTC I/O Registers................................................................................................................................................................... 41
Keyboard / Mouse Wakeup Index / Data Registers...........................................................................................................42
Keyboard / Mouse Wakeup Registers.................................................................................................................................42
Memory Mapped I/O APIC Registers ................................................................................................................................43
Indexed I/O APIC Registers ................................................................................................................................................43
Configuration Space I/O.......................................................................................................................................................45
Device 16 Function 0 Registers - USB 1.1 UHCI Ports 0-1................................................................................................46
PCI Configuration Space Header .......................................................................................................................................................... 46
USB-Specific Configuration Registers.................................................................................................................................................. 47
USB I/O Registers................................................................................................................................................................................. 49
Device 16 Function 1 Registers - USB 1.1 UHCI Ports 2-3................................................................................................50
PCI Configuration Space Header .......................................................................................................................................................... 50
USB-Specific Configuration Registers.................................................................................................................................................. 51
USB I/O Registers................................................................................................................................................................................. 53
Device 16 Function 2 Registers - USB 1.1 UHCI Ports 4-5................................................................................................54
PCI Configuration Space Header .......................................................................................................................................................... 54
USB-Specific Configuration Registers.................................................................................................................................................. 55
USB I/O Registers................................................................................................................................................................................. 57
Device 16 Function 3 Registers - USB 2.0 EHCI................................................................................................................58
PCI Configuration Space Header .......................................................................................................................................................... 58
USB-Specific Configuration Registers.................................................................................................................................................. 59
EHCI USB 2.0 I/O Registers................................................................................................................................................................. 60
Device 17 Function 0 Registers – Bus Control and Power Management .........................................................................61
PCI Configuration Space Header .......................................................................................................................................................... 61
ISA Bus Control.................................................................................................................................................................................... 62
Miscellaneous Control........................................................................................................................................................................... 64
Function Control ................................................................................................................................................................................... 65
Serial IRQ, LPC, and PC/PCI DMA Control ........................................................................................................................................ 66
Plug and Play Control - PCI.................................................................................................................................................................. 66
GPIO and Miscellaneous Control.......................................................................................................................................................... 67
Programmable Chip Select Control....................................................................................................................................................... 69
ISA Decoding Control........................................................................................................................................................................... 70
Power Management-Specific Configuration Registers.......................................................................................................................... 72
System Management Bus-Specific Configuration Registers................................................................................................................. 79