82371FB Datasheet, PDF (2/122 Pages) Intel Corporation – 82371FB (PIIX) AND 82371SB (PIIX3) PCI ISA IDE XCELERATOR

82371FB (PIIX) AND 82371SB (PIIX3)
E
PCICLK
AD[31:0]
C/BE[3:0]#
FRAME#
TRDY#
IRDY#
STOP#
DEVSEL#
SERR#
PAR
IDSEL
PHOLD#
PHOLDA#
PIIX Only ^MDRQ[1:0]
(Not On PIIX3) MDAK[1:0]#
MIRQ1
MIRQ0
PWROK
CPURST
RSTDRV
INIT
IRQ8#
IRQ12/M
INTR
NMI
IRQ(15,14,11:9,7:3,1)
PIRQ[A:D]#
SMI#
STPCLK#
EXTSMI#
PCI
Bus
Interface
Mother
Board
Interface
System
Reset
PCIRST#
Interrupt
System
Power
Mgmt
ISA
Bus
Interface
M
U
X
IDE
Interface
M
DD14
U
X
SD[15:0]
IOCS16#
MEMCS16#
MEMR#
MEMW#
AEN
IOCHRDY
IOCHK#
SYSCLK
BALE
IOR#
IOW#
SMEMR#
SMEMW#
ZEROWS#
SA[7:0]
DD12/SBHE#
DD[11:0]/SA[19:8]
LA23/CS1S
LA22/CS3S
LA21/CS1P
LA20/CS3P
LA19:17]/DA[2:0]
DIOR#
DIOW#
DDRQ[1:0]
DDAK[1:0]#
IORDY
SOE#
SDIR
DD13
DD15/PCS#
SPKR
OSC
DREQ[7:5,3:0]
DACK[7:5,3:0]#
TC
REFRESH#
Timers/
Counters
DMA
X-Bus
Support
Logic
XDIR#
XOE#
RTCALE
FERR#
IGNNE#
BIOSCS#
RTCCS#
KBCS#
PIIX3 Only
(Not On PIIX)
USBCLK
USBP0
USBP1
Universial
Serial
Interface
Test
I/O APIC
Support
Logic
PIIX3 Only
(Not On PIIX)
M
U
DD14 or APICCS#
X
PCIRST# or APICACK#
TESTIN#
TESTIN# or APICREQ#
Note:
blkdia.drw
1. IOAPIC signals are multiplexed with signals from the System Reset, Test, and IDE Interface blocks
2. PIRQD# is an input on the PIIX and bi-directional on PIIX3.
PIIX/PIIX3 Simplified Block Diagram
2