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33
NS9750 Pinout
Figure 8: NS9750 unused PCI termination
R6 10K
PCI_CLKOUT
R2 10K
3.3V
PCI_CLKIN
DEVSEL-
IRDY-
PERR-
STOP-
R7 10K
FRAME-
R8 10K
R4 10K
P C I
U1D
NS9750
J24
H26
J25
J26
K24
K25
K26
L24
L26
M24
M25
M26
N24
N25
N26
P26
U24
V26
V25
W26
V24
W25
Y26
W24
Y24
AA25
AB26
AA24
AB25
AC26
AD26
AC25
L25
P25
U25
AA26
T26
U26
Y25
T25
T24
AC24
AD23
AE24
AD25
AB23
AC22
AF25
AF24
AE23
AD22
AE26
AB24 AA23
R25
P24
R26
R24
AF23
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD8
AD9
AD10
AD11
AD12
AD13
AD14
AD15
AD16
AD17
AD18
AD19
AD20
AD21
AD22
AD23
AD24
AD25
AD26
AD27
AD28
AD29
AD30
AD31
CBE0*
CBE1*
CBE2*
CBE3*
DEVSEL*
FRAME*
IDSEL in
TRDY*
IRDY*
GNT1*
GNT2*
GNT3*
REQ1* in
REQ2* in
REQ3* in
INTA* in if rsc_in =0
INTB* in if PCI mode
INTC* in
INTD* in
RESET*
CLKIN pulled up CLKOUT
PERR*
PAR
SERR* in if rsc_in =0
STOP*
RSC_IN* pulled down
R1
47-56
R3 10K
Notes:
1. Startup code needs to put the PCI bridge
into reset.
2. PCI Mode: Boot_strap[1].N3 = default; no
pulldown.
3. NS9750 is current PCI bus master.
Signals that it can drive should have
individual pullups.
TRDY-
R5 10K
PCI_VB