Isa/Pci-Bus Backboard Connector Pin Assignments - NEC POWERMATE V Service Manual

ISA/PCI-BUS BACKBOARD CONNECTOR PIN ASSIGNMENTS

Table A-14 provides the pin assignments for the ISA/PCI-bus backboard connector on the
system board.
Table A-14 ISA/PCI Backboard Connector Pin Assignments
Pin Signal
A1 IOCHCK
A2 SD07
A3 SD06
A4 SD05
A5 SD04
A6 SD03
A7 SD02
A8 SD01
A9 SD00
A10 IOCHRDY
A11 AEN
A12 SA19
A13 SA18
A14 SA17
A15 SA16
A16 SA15
A17 SA14
A18 SA13
A19 SA12
A20 SA11
A21 SA10
A22 SA09
A23 SA08
A24 SA07
A25 SA06
A26 SA05
A27 SA04
Pin Signal
B1 GND
B2 RSET DRV E2
B3 +5V
B4 IRO09
B5 5V
B6 DRQ2
B7 12V
B8 0WS
B9 +12V
B10 GND
B11 SMEMWR
B12 SMEMRD
B13 IORD
B14 IOWR
B15 DACK3
B16 DRQ3
B17 DACK1
B18 DRQ1
B19 REFRESH
B20 BCLK
B21 IRQ07
B22 IRQ06
B23 IRQ05
B24 IRQ04
B25 IRQ03
B26 DACK2
B27 T/C
Connector Pin Assignments
Pin Signal
E1 GND
GND
E3 PCIINT1
E4 PCIINT2
E5 +5V
E6 Key
E7 +5V
E8 PCIRST
E9 GNTO
E10 REQ0
E11 GND
E12 PCLKE
E13 GND
E14 AD30
E15 +3.3V
E16 Key
E17 +3.3V
E18 AD28
E19 AD26
E20 AD24
E21 AD22
E22 AD20
E23 AD18
E24 +3.3V
E25 Key
E26 +3.3V
E27 AD16
A-11
Pin Signal
F1 GND
F2 GND
F3 PCIINT3
F4 PCIINT4
F5 +5V
F6 Key
F7 +5V
F8 PCLKF
F9 GND
F10 GNT1
F11 GND
F12 REQ1
F13 AD31
F14 AD29
F15 +3.3V
F16 Key
F17 +3.3V
F18 AD27
F19 AD25
F20 CBE3
F21 AD23
F22 AD21
F23 AD19
F24 +3.3v
F25 Key
F26 +3.3V
F27 AD17