82371AB (PIIX4)
E
270
4/9/97 2:23 PM PIIX4aDS
INTEL CONFIDENTIAL
(until publication date)
PRELIMINARY
12.0. PINOUT INFORMATION
M
N
P
R
T
U
V
W
Y
K
L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
A
B
C
D
E
F
G
H
J
PCIR-
ST#
AD1
PCIR-
EQB#
PHLD-
A#
SDD6
SDD4 SDD13 SDDR-
EQ
SDD-
ACK#
SDA2
PDD8
PDD7
AD27
IDSEL
AD19
FRA-
ME #
SERR# AD13
AD9
AD5
AD31
AD0
PCIR-
EQC#
PHO-
LD#
SDD9
SDD-
11
SDD1
SDI-
OW#
SDA1
SDC-
S1#
PDD9
AD26
AD23
PDD6
AD18
IRDY#
PAR
AD12
AD8
AD4
AD30
AD25
CLK-
RUN#
PCIR-
EQD#
SDD7
SDD5
SDD3 SDD14
SDI-
OR#
SDA0
SDC-
S3#
PDD10 PDD5
AD22
AD17 TRDY#
C/-
BE1#
AD11
C/-
BE0#
AD3
AD28
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
PCI-
CLK
SDD8
SDD2 SDD15
SIO-
RDY
PDD-
12
PDD3 PDD-
11
PDD4
C/-
BE3#
AD20
C/-
BE2#
STOP# AD14
AD10
AD6
AD2
AD29
AD24
AD21
PCIR-
EQA#
VCC
SDD12 SDD0
VCC
PDD14 PDD1 PDD13 PDD2
AD16
DEV-
SEL#
AD15
VSS
AD7
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
USB-
P1+
GPO-
28
PDI-
OW#
PDI-
OR#
PDD-
REQ
PDD15 PDD0
GPO-
29
GPO-
30
PIR-
QD#
USB-
P0+
PIO-
RDY
PDA0
PDA2
PDA1
PDD-
ACK#
GP1-
21
GPO-
0
GPO-
27
GPI-
18
USB
P1-
USB
PO-
GPI-
19
GPI-
20
PDC-
S3#
PDC-
S1#
API-
CCS#
THRM# IRQ0
OC0# OC1#
GPI-
14
NC
NC
NC
NC
NC
VSS
(USB)
KBC-
CS#
RTC-
CS#
GPI-
16
GPI-
17
VCC
(USB)
VREF
APIC-
ACK#
STP-
CLK#
SER-
IRQ
IRQ1
ZZ
SPKR
APIC-
REQ#
FERR# SLP#
RTC-
ALE
VCC
(RTC)
IGN-
NE#
INIT
INTR
NMI
GPI-
13
PCS0#
CLK-
48
GPI-
15
REQ-
A#
BIOS-
CS#
XDIR#
XOE#
NC
RSM-
RST#
POWER
OK
CPU-
RST
A20-
M#
GNTA# REQ-
B#
MCCS#
PCS1#
VCC
(SUS)
SMBAL-
ERT#
RTCX1 RCIN#
A20-
GATE
GNT-
B#
REQ-
C#
GNT-
C#
PIR-
QC#
LID
SUS-
CLK
RI#
GPI-
1
SMI#
CPU_-
STP#
PCI_-
STP#
PIR-
QA#
PIR-
QB#
VCC
(SUS)
CON-
FIG1
CON-
FIG2
SMB-
CLK
RTC-
X2
SD6
SD3
IOCH-
RDY
IOW#
SA16
SYS-
CLK
SA9
IRQ3
SA4
SA1
LA23
IRQ-
12/M
LA18
DACK-
5#
SD9
SUS_
STAT1#
SUS_
STAT2#
GPO-
8
SMB-
DATA
IRQ9-
OUT
BALE
SA0
IRQ10
LA20
DACK-
0#
MEM-
W#
DRE-
Q6
DRE-
Q7
SUSC#
BAT-
LOW#
PWR-
BTN#
SD2
SME-
MW#
SA18
DRE-
Q3
DRE-
Q1
SA11
IRQ5
SA6
SD7
DRE-
Q2
SD0
SA19
DACK-
3#
SA14
SA12
IRQ6
SA7
TC
OSC
IOCS-
16#
LA21
IRQ14
MEM-
R#
DACK-
6#
SD11 TEST# SUSB#
EXT-
SMI#
RST-
DRV
SD4
SD1
SME-
MR#
SA17
DACK-
1#
REFR-
ESH#
SA10
IRQ4
SA5
SA2
SBH-
E#
IRQ11
LA19
DRE-
Q0
SD8
DACK-
7#
SD13
SD15 SUSA#
IOCHK# SD5
ZERO-
WS#
AEN
IOR#
SA15
SA13
IRQ7
SA8
DACK-
2#
SA3
MEM-
CS16#
LA22
IRQ15
LA17
DRE-
Q5
SD10
SD12
SD14
IRQ8#
SDD10
pix4_pin
NOTE:
For multiplexed pins, only one of the two signal names is shown in this figure. For example, the name for
“Y20” only lists IRQ8#(instead of IRQ8#/GPI6). The pin list in Table 55 includes both signal names for
the multiplexed pins.
Figure 34. PIIX4 Pinout