PCI-104 Bus Pinout and Signal names

PCI-104 Bus Pinout

The pinout listed in the table below is used as the PCI interface on PC/104-Plus boards as the J3/P3 connector, and with PCI-104 boards [again as J3/P3].
The same connector and signal assignments are used for the PCI interface on the PCI/104-Express board

Only 33MHz 32-bit PCI is supported, the 64-bit Extension of PCI is not supported. 66MHz may be supported but was not tested as part of the specification.
Check the M66EN pin to determine if the board will support the 66MHz bus speed.

**PCI-104 Connector Pinout**
Pin	A	B	C	D
1	GND	Reserved	+5	AD00
2	VI/O	AD02	AD01	+5V
3	AD05	GND	AD04	AD03
4	C/BE0#	AD07	GND	AD06
5	GND	AD09	AD08	GND
6	AD11	VI/O	AD10	M66EN
7	AD14	AD13	GND	AD12
8	+3.3V	C/BE1#	AD15	+3.3V
9	SERR#	GND	Reserved	PAR
10	GND	PERR#	+3.3V	Reserved
11	STOP#	+3.3V	LOCK#	GND
12	+3.3V	TRDY#	GND	DEVSEL#
13	FRAME#	GND	IRDY#	+3.3V
14	GND	AD16	+3.3V	C/BE2#
15	AD18	+3.3V	AD17	GND
16	AD21	AD20	GND	AD19
17	+3.3V	AD23	AD22	+3.3V
18	IDSEL0	GND	IDSEL1	IDSEL2
19	AD24	C/BE3#	VI/O	IDSEL3
20	GND	AD26	AD25	GND
21	AD29	+5V	AD28	AD27
22	+5V	AD30	GND	AD31
23	REQ0#	GND	REQ1#	VI/O
24	GND	REQ2#	+5V	GNT0#
25	GNT1#	VI/O	GNT2#	GND
26	+5V	CLK0	GND	CLK1
27	CLK2	+5V	CLK3	GND
28	GND	INTD#	+5V	RST#
29	+12V	INTA#	INTB#	INTC#
30	-12V	REQ3#	GNT3#	GND

PC-104Plus adds an additional connector; J3 which carries the PCI bus signals.
Refer to the PCI Bus page for a bus description and information.

Back to the main PC104 bus page for a description,
including connector manufacturers, IC manufacturers and links.

Navigation: Engineering Home > Interface Buses > Back-Palne Buses > PCI/104 Format > PCI/104 signal assignments.


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