SiS5595 PCI System I/O Chipset
Pentium PCI System I/O Chipset
SiS5595
Preliminary
Rev. 2.0
Nov. 02, 1998
This specification is subject to change without notice. Silicon Integrated Systems
Corporation assumes no responsibility for any errors contained herein.
Copyright by Silicon Integrated Systems Corp., all rights reserved.
SiS5595 PCI System I/O Chipset
Contents
1
FEATURES ....................................................................................................... 1
1.1
1.2
2
2.1
2.2
3
3.1
3.1.1
3.1.2
3.1.3
3.1.4
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.4
3.5
3.5.1
3.5.2
3.5.3
3.5.4
3.5.5
3.5.6
3.6
3.6.1
3.7
3.7.1
3.7.2
3.7.3
3.8
3.8.1
3.8.2
3.8.3
3.8.4
3.8.5
SiS5595 PCI SYSTEM I/O.................................................................... 1
FUNCTIONAL BLOCK DIAGRAM ........................................................ 4
SiS5595 PIN ASSIGNMENT (TOP VIEW) ............................................ 6
SiS5595 CHIP ALPHABETICAL PIN LIST ............................................ 7
PCI BUS INTERFACE .......................................................................... 9
PCI TO ISA BUS BRIDGE ............................................................ 9
DISTRIBUTED DMA (DDMA)...................................................... 11
PC/PCI DMA ............................................................................... 12
SERIAL IRQ (SIRQ).................................................................... 12
ACPI /LEGACY PMU .......................................................................... 15
ADVANCED CONFIGURATION AND POWER INTERFACE
(ACPI) …………………………………………………………………..15
POWER MANAGEMENT UNIT................................................... 33
SMBUS FUNCTIONAL DESCRIPTIONS............................................ 36
SMBUS HOST MASTER INTERFACE........................................ 36
SMBUS HOST SLAVE INTERFACE........................................... 36
USB INTERFACE ............................................................................... 37
DATA ACQUISITION MODULE (DAM)............................................... 38
GENERAL DESCRIPTION.......................................................... 38
POWER SUPPLY VOLTAGE MONITORING.............................. 39
FAN SPEED MONITORING........................................................ 39
THE ROUND-ROBIN SAMPLING CYCLE .................................. 40
INTERFACE REGISTER BLOCK................................................ 41
INTERNAL REGISTERS............................................................. 41
INTEGRATED REAL TIME CLOCK (RTC) ......................................... 41
REAL TIME CLOCK MODULE.................................................... 41
AUTOMATIC POWER CONTROL MODULE...................................... 44
APC REGISTERS....................................................................... 45
APC FUNCTIONS....................................................................... 45
S3 (STR) FUNCTION RELATED SIGNALS ................................ 50
INTEGRATED KEYBOARD CONTROLLER....................................... 52
STATUS REGISTER................................................................... 52
INPUT/OUTPUT BUFFER .......................................................... 53
INTERNAL OUTPUT PORT DEFINITIONS................................. 53
KEYBOARD INTERNAL BIOS COMMANDS ( I/O PORT 64H ) .. 54
PASSWORD SECURITY AND KEYBOARD POWER UP
i
Silicon Integrated Systems Corporation
PIN ASSIGNMENT (TOP VIEW)....................................................................... 6
FUNCTIONAL DESCRIPTION .......................................................................... 9
Preliminary V2.0 Nov. 2, 1998
SiS5595 PCI System I/O Chipset
FUNCTIONS ............................................................................... 56
RELATED PCI TO ISA BRIDGE CONFIGURATION REGISTERS
………………………………………………………………………… 58
ISA BUS INTERFACE ........................................................................ 59
ISA BUS CONTROLLER ............................................................ 59
DMA CONTROLLER................................................................... 59
INTERRUPT CONTROLLER ...................................................... 59
INTERRUPT STEERING ............................................................ 60
TIMER/COUNTER ...................................................................... 61
SYSTEM RESET ................................................................................ 61
PCI/ISA BUS INTERFACE ................................................................. 63
PCI BUS + CPU INTERFACE............................................................. 65
KBC + MISC. ...................................................................................... 67
USB CONTROLLER........................................................................... 72
RTC .................................................................................................... 73
DATA ACQUISITION INTERFACE ..................................................... 75
POWER PINS..................................................................................... 76
3.8.6
3.9
3.9.1
3.9.2
3.9.3
3.9.4
3.9.5
3.10
4
4.1
4.2
4.3
4.4
4.5
4.6
4.7
5
6
PIN DESCRIPTIONS....................................................................................... 63
HARDWARE TRAP ......................................................................................... 77
REGISTER SUMMARY ................................................................................... 79
6.1
6.2
6.2.1
6.2.2
6.2.3
6.2.4
6.3
6.4
6.5
6.6
6.6.1
6.6.2
6.7
6.7.1
6.8
PCI TO ISA BRIDGE CONFIGURATION REGISTERS ...................... 79
LEGACY ISA REGISTERS................................................................. 80
DMA REGISTERS ...................................................................... 80
INTERRUPT CONTROLLER REGISTERS................................. 82
TIMER REGISTERS ................................................................... 82
OTHER REGISTERS.................................................................. 82
PMU CONFIGURATION REGISTERS ............................................... 83
ACPI CONFIGURATION REGISTERS ............................................... 84
SMBUS IO REGISTERS..................................................................... 85
USB OPENHCI HOST CONTROLLER CONFIGURATION SPACE.... 85
USB CONFIGURATION SPACE (FUNCTION 2) ........................ 85
HOST CONTROLLER OPERATIONAL REGISTERS ................. 86
AUTOMATIC POWER CONTROL (APC) REGISTERS ...................... 87
RTC REGISTERS....................................................................... 87
DATA ACQUISITION MODULE (DAM) INTERNAL REGISTERS....... 88
PCI TO ISA BRIDGE CONFIGURATION REGISTERS ...................... 89
PMU CONFIGURATION REGISTERS ............................................. 111
ACPI CONFIGURATION REGISTERS ............................................. 134
SMBUS IO REGISTERS................................................................... 153
THE DATA ACQUISITION MODULE INTERNAL REGISTERS ........ 160
ii
Silicon Integrated Systems Corporation
7
REGISTER DESCRIPTION ............................................................................. 89
7.1
7.2
7.3
7.4
7.5
Preliminary V2.0 Nov. 2, 1998
SiS5595 PCI System I/O Chipset
7.6
7.7
7.8
7.8.1
7.8.2
7.8.3
7.8.4
7.8.5
8
8.1
8.2
8.3
8.4
8.5
8.5.1
8.5.2
8.5.3
9
10
9.1
APC CONTROL REGISTERS .......................................................... 168
OTHER REGISTERS ....................................................................... 173
USB OPENHCI HOST CONTROLLER CONFIGURATION SPACE.. 173
CONTROL AND STATUS PARTITION ..................................... 174
MEMORY POINTER PARTITION ............................................. 181
BITS FRAME COUNTER PARTITION ...................................... 184
ROOT HUB PARTITION ........................................................... 187
LEGACY SUPPORT REGISTERS............................................ 194
SiS5595 INTERNAL POWER PLANES ............................................ 198
ABSOLUTE MAXIMUM RATINGS.................................................... 199
DC CHARACTERISTICS.................................................................. 199
INTERNAL RTC POWER CONSUMPTION...................................... 202
AC CHARACTERISTICS .................................................................. 203
S
i
S5595 DMA CONTROLLER AC CHARACTERISTICS .......... 203
S
i
S5595 PCI-TO-ISA CYCLES AC CHARACTERISTICS ......... 204
S
i
S5595 MISC. AC CHARACTERISTICS ................................. 206
SiS5595 (PQFP 208-PIN PLASTIC FLAT PACKAGE)...................... 209
COPYRIGHT NOTICE................................................................................ 210
ELECTRICAL CHARACTERISTICS .............................................................. 198
MECHANICAL DIMENSION .......................................................................... 209
Preliminary V2.0 Nov. 2, 1998
iii
Silicon Integrated Systems Corporation
SiS5595 PCI System I/O Chipset
Figures
FIGURE 1.2-1 FUNCTIONAL BLOCK DIAGRAM .................................................... 4
FIGURE 2.1-1 PIN ASSIGNMENT (TOP VIEW) ...................................................... 6
FIGURE 3.1-1 PCI ISA DELAY TRANSACTION.................................................... 10
FIGURE 3.1-2 START FRAME TIMING WITH SOURCE SAMPLED A LOW PULSE
ON SMI# .......................................................................................... 13
FIGURE 3.1-3 STOP FRAME TIMING WITH HOST USING 17 SIRQ# SAMPLING
PERIOD ........................................................................................... 13
FIGURE 3.2-1 GLOBAL SYSTEM STATE DIAGRAM............................................ 16
FIGURE 3.2-2 WAKE UP EVENTS IN S1 / S2....................................................... 18
FIGURE 3.2-3 5595'S TIMING DIAGRAM IN S2 STATE ....................................... 18
FIGURE 3.2-4 NORTH BRIDGE/5595'S TIMING DIAGRAM IN S3 STATE ........... 19
FIGURE 3.2-5 STPCLK# THROTTLING & PERFORMANCE ................................ 22
FIGURE 3.2-6 PROCESSOR POWER STATE DIAGRAM..................................... 23
FIGURE 3.2-7 STPCLK# SOURCE ....................................................................... 24
FIGURE 3.2-8 THERMAL DETECTION LOGIC ..................................................... 25
FIGURE 3.2-9 SCI / SMI# EVENTS OVERVIEW .................................................. 27
FIGURE 3.2-10 GENERAL PURPOSE TIMER LOGIC .......................................... 28
FIGURE 3.2-11 GPIO LOGIC ................................................................................ 29
FIGURE 3.4-1 USB SYSTEM BLOCK DIAGRAM .................................................. 38
FIGURE 3.5-1 DATA ACQUISITION MODULE BLOCK DIAGRAM ....................... 39
FIGURE 3.6-1 RTC MODULE BLOCK DIAGRAM.................................................. 42
FIGURE 3.6-2 ADDRESS MAP OF THE STANDARD BANK................................. 43
FIGURE 3.6-3 BLOCK DIAGRAM OF RTC............................................................ 44
FIGURE 3.7-1 TYPICAL TIMING SEQUENCE ON THE POWER CONTROL
RELATED SIGNALS ...................................................................... 45
FIGURE 3.7-2 POWER UP REQUEST EVENTS................................................... 47
FIGURE 3.7-3 POWER BUTTON ON EVENT ....................................................... 47
FIGURE 3.7-4 RING UP EVENT............................................................................ 48
FIGURE 3.7-5 POWER MANAGE EVENT 1.......................................................... 49
FIGURE 3.7-6 POWER MANAGE EVENT 0.......................................................... 49
FIGURE 3.7-7 POWER DOWN REQUEST EVE.................................................... 50
FIGURE 3.9-1 INTERRUPT ROUTER IRX ............................................................ 61
FIGURE 3.10-1 TIMING SEQUENCE FOR POWER-ON PROCESS..................... 62
FIGURE 3.10-2 TIMING FOR GENERATING INIT#/CPURST# ............................. 62
FIGURE 5-1 BLOCK DIAGRAM FOR GENERATING CORE FREQUENCY....... 78
FIGURE 8.1-1 SiS5595 INTERNAL POWER PLANES ........................................ 198
FIGURE 8.5-1 DMA CYCLES .............................................................................. 204
FIGURE 8.5-2 THE AC TIMING DIAGRAM OF PCI TO ISA BUS CYCLES......... 206
FIGURE 8.5-3 MISCELLANEOUS TIMING .......................................................... 209
FIGURE 9.2-1 SiS5595 PACKAGE SPECIFICATION.......................................... 209
Preliminary V2.0 Nov. 2, 1998
iv
Silicon Integrated Systems Corporation