82371AB (PIIX4)
E
8
4/9/97 2:23 PM PIIX4aDS
INTEL CONFIDENTIAL
(until publication date)
PRELIMINARY
7.1.23. DEVRESH—Device Resource H (Function 3)................................................................................133
7.1.24. DEVRESI—Device Resource I (Function 3)...................................................................................133
7.1.25. DEVRESJ
Device Resource J (Function 3) .................................................................................134
7.1.26. PMREGMISC
Miscellaneous Power Management (Function 3)..................................................134
7.1.27. SMBBA—SMBUS Base Address (Function 3)................................................................................135
7.1.28. SMBHSTCFG
SMBUS Host Configuration (Function 3)..............................................................135
7.1.29. SMBSLVC
SMBUS Slave Command (Function 3).......................................................................135
7.1.30. SMBSHDW1
SMBUS Slave Shadow Port 1 (Function 3)............................................................136
7.1.31. SMBSHDW2
SMBUS Slave Shadow Port 2 (Function 3)............................................................136
7.1.32. SMBREV
SMBUS Revision Identification (Function 3) ................................................................136
7.2. Power Management IO Space Registers.................................................................................................137
7.2.1. PMSTS
Power Management Status Register (IO) .........................................................................137
7.2.2. PMEN
Power Management Resume Enable Register (IO)............................................................138
7.2.3. PMCNTRL
Power Management Control Register (IO)...................................................................138
7.2.4. PMTMR
Power Management Timer Register (IO)..........................................................................139
7.2.5. GPSTS
General Purpose Status Register (IO) ..............................................................................139
7.2.6. GPEN
General Purpose Enable Register (IO) ...............................................................................140
7.2.7. PCNTRL
Processor Control Register (IO)......................................................................................141
7.2.8. PLVL2
Processor Level 2 Register (IO) .........................................................................................142
7.2.9. PLVL3
Processor Level 3 Register (IO) ........................................................................................142
7.2.10. GLBSTS
Global Status Register (IO) ...........................................................................................143
7.2.11. DEVSTS
Device Status Register (IO) ..........................................................................................144
7.2.12. GLBEN
Global Enable Register (IO) ............................................................................................144
7.2.13. GLBCTL
Global Control Register (IO)..........................................................................................145
7.2.14. DEVCTL
Device Control Register (IO).........................................................................................146
7.2.15. GPIREG
General Purpose Input Register (IO).............................................................................147
7.2.16. GPOREG
General Purpose Output Register (IO)........................................................................148
7.3. SMBus IO Space Registers......................................................................................................................148
7.3.1. SMBHSTSTS
SMBus Host Status Register (IO)............................................................................148
7.3.2. SMBSLVSTS
SMBus Slave Status Register (IO) ..........................................................................149
7.3.3. SMBHSTCNT
SMBus Host Control Register (IO)..........................................................................150
7.3.4. SMBHSTCMD
SMBus Host Command Register (IO)....................................................................150
7.3.5. SMBHSTADD
SMBus Host Address Register (IO)........................................................................151
7.3.6. SMBHSTDAT0
SMBus Host Data 0 Register (IO).........................................................................151
7.3.7. SMBHSTDAT1
SMBus Host Data 1 Register (IO).........................................................................151
7.3.8. SMBBLKDAT
SMBus Block Data Register (IO).............................................................................152
7.3.9. SMBSLVCNT
SMBus Slave Control Register (IO).........................................................................152
7.3.10. SMBSHDWCMD
SMBus Shadow Command Register (IO).........................................................153
7.3.11. SMBSLVEVT
SMBus Slave Event Register (IO) .........................................................................153
7.3.12. SMBSLVDAT
SMBus Slave Data Register (IO)...........................................................................153
8.0. PCI/ISA BRIDGE FUNCTIONAL DESCRIPTION ......................................................................................154
8.1. Memory and IO Address Map...................................................................................................................154