82801DB Datasheet, PDF (558/587 Pages) Intel Corporation – Intel 82801DB I/O Controller Hub 4 (ICH4)

Testability
Table 19-9. LONG XOR Chain (Sheet 1 of 3)
Pin Name
Ball #
Notes⁽¹⁾
AC_SYNC
AC_SDOUT
C9 Top of XOR Chain
D9 2nd signal in XOR
PIRQE#/GPIO2
C8
GNT2#
A7
GNT3#
B7
GNTA#/GPIO16
E8
REQB#/REQ5#/
GPIO1
A6
REQ4#
B6
REQA#/GPIO0
B5
PIRQF#/GPIO3
D7
GNT4#
D6
GNTB#/
GNT5#GPIO17
C5
GNT1#
E6
PIRQC#
B4
PIRQA#
D5
PIRQH#/GPIO5
C4
PIRQD#
A3
REQ1#
A2
REQ2#
B3
AD18
E5
REQ0#
B1
PIRQG#/GPIO4
C3
AD28
D3
PIRQB#
C2
AD15
F5
GNT0#
C1
AD22
E4
AD30
D2
AD20
E3
AD16
F4
AD4
G5
AD24
E2
AD0
H5
STOP#
F3
AD11
G4
Pin Name
PDA0
PDCS1#
PDA2
PDCS3#
IRQ15
GPIO19
GPIO18
GPIO22
GPIO20
VRMPWRGD
A20GATE
RCIN#
NC
THRMTRIP#
A20M#
CPUPWRGD
INTR
NMI
IGNNE#
INIT#
STPCLK#
SMI#
CPUSLP#
NC
HI_STB#/
HI_STBF
HI_STB/
HI_STBS
GPIO23
GPIO32
GPIO33
GPIO37
GPIO35
GPIO36
GPIO34
PDD6
PDD4
Ball #
AA13
Y13
W13
AB14
AA19
W18
Y21
Y20
W19
V19
Y22
U22
V20
W20
AB23
Y23
AB22
V21
W21
V22
V23
W23
U21
U23
N20
P21
J21
J20
G22
H20
G20
F21
F20
Y8
AA7
Notes⁽¹⁾
558
Intel^® 82801DB ICH4 Datasheet