
SiS5595 PCI System I/O Chipset
Preliminary V2.0 Nov. 2, 1998 27 Silicon Integrated Systems Corporation
(bit)SMI# source
(31)Standby Tmr 0
(30)Standby Tmr 1
(29)Standby Timr 2
(28)Wake up 0
(27)Wake up 1
(26)Reserved
(25)Ch0 IDE D0
(24)Ch1 IDE D0
(23)Keyboard Port
(22)Serial Port 1
(21)Serial Port 2
(20)Parallel Ports
(19)Ring
(18)10-bit I/O
(17)16-bit I/O
(16)Mem A-B Seg.
(15)Mem C0000-C7FFF
(14)VGA I/O 3B0 3DF
(13)Linear Frame Buffer
(12)Microsoft Sound
(11)Sound Blaster Port
(10)MIDI port
(09)Game Port
(08)GPCS0#
(07)GPCS1#
(06)ExtSMI#
(05)Floppy Port
(04)Ch0 IDE D1
(03)Ch1 IDE D1
(02)APM(Sofware)
(bit)Source
(8)USB
(11)GP_TMR
(0)EXTSMI#
(6)Hotkey
(1)Ring
(4)DAM
(10)SMBus
(others)GPIO
SMI_EN
ACPI 31h.5
SCI
SMI#
PMU Block
ACPI Block
SCI Enable
PMU 80~83h
(bit)Wake up source
(31)Ch0 IDE D0
(30)Ch1 IDE D0
(29)Keyboard Port
(28)Serial Port 1
(27)Serial Port 2
(26)Parallel Port
(25)DMA,USB MA Req.
(24)IRQ0,1,3~15,NMI
(23)Ring
(22)10-bit I/O
(21)16-bit I/O
(20)Mem A-B Seg.
(19)Mem C0000-C7FFF
(18)VGA I/O 3B0-3DFh
(17)Linear Frame Buffer
(16)Microsoft Sound
(15)Sound Blaster Port
(14)MIDI Port
(13)Game Port
(12)GPCS0#
(11)GPCS1#
(10)INIT
(09)EXTSMI#
(08)PCI,IDE or AGP Master
(07)AGP cycle
(06)Floppy Port
(05)Ch1 IDE D1
(04)Ch1 IDE D1
Wake up 1 Enable
PMU 54~57h
Wake up 0 Enable
PMU 50~53h
PMU 79h
PMU 7Ah
PMU 7Bh
GPCS0#
GPCS1#
ExtSMI#
Ring Logic
Ring Logic
GPCS0#
GPCS1#
ExtSMI#
IRQWK Enable
PMU 68~69h
(bit)Source
(15)IRQ15
(14)IRQ14
(13)IRQ13
(12)IRQ12
(11)IRQ11
(10)IRQ10
(09)IRQ9
(08)IRQ8
(07)IRQ7
(06)IRQ6
(05)IRQ5
(04)IRQ4
(03)IRQ3
(02)NMI
(01)IRQ1
(00)IRQ0
BM_REQ
INIT
SMI_STS
ACPI 30h.5
PWRBT#
EXTSMI#
Ring Logic
GPIOxx
(bit)Source
(10)RTC
(08)PWRBTN#
(00)PM_TMR
SMI# Status
PMU 64~67h
SMI# Enable
PMU 60~63h
PMU_SMI#
PMU_SCI
(to ACPI Block)
PMU_SCI
(from PMU Block)
Legacy Enable
ACPI 31h
Legacy Status
ACPI 30h
(bit)SMI# Source
(17:7,5:1)GPIO SMI#
GPIOxx
GPIO SMI# Enable
ACPI 2Ch
GPIO Status
ACPI 14h
(bit)SMI# Source
(27)Serial IRQ SMI#
SIRQ SMI# Enable
ACPI 18h.27
SIRQ SMI# Status
ACPI 14h.27
GPE Enable
ACPI 18h
GPE Status
ACPI 14h
PM1 Status
ACPI 00h
PM1 Enable
ACPI 02h
Write ACPI 13h.1
BIOS_RLS =1
GBL_STS
ACPI 00h.5
GBL_EN
ACPI 02h.5
Write ACPI 04h.2
GBL_RLS =1
(bit)SMI# Source
(7)DAM_SMI#
(6)USB_SMI#
(4)SMI# CMD
(3)SMBus SMI#
(2)Perodic SMI#
(1)Wake-up SMI#
(0)Software SMI#
IRQ Wakeup event
to ACPI 14h.31
SCI_EN
ACPI 04h.0
DAM SMI#
USB SMI#
USB IRQ / SMI#
DAM IRQ / SMI#
IRQ8#
*Note 1
PMU_SMI#
SMBus SMI#
SMBus
Figure 3.2-9 SCI / SMI# Events Overview
Note 1: The “l(fā)ine” means OR logic.