XMP-CPCI-6U Bus

Compact PCI (CPCI) utilizes a card-type computer chassis, having a multi-pin backplane. The main advantage is smaller sizing and simplified access to electronics. There are two sizes of CPCI: -6U and -3U. The CPCI-6U is the larger of the two form factors and connects to the backplane bus via jumper connector J1. The CPCI-6U is described in this section.

For bus information of the CPCI-3U, click here.

CPCI-6U Main Board, Rear Panel Connector J1

NOTE: the CPCI XMP does not use the 64-bit extension.

**CPCI backplane connector (main and expansion boards)**
Pin	E	D	C	B	A
25	5V	3.3V	ENUM#	REQ64#	5V
24	ACK64#	AD[00]	V(I/O)	5V	AD[01]
23	AD[02]	5V	AD[03]	AD[04]	3.3V
22	AD[05]	AD[06]	3.3V	GND	AD[07]
21	C/BE[0]#	M66EN	AD[08]	AD[09]	3.3V
20	AD[10]	AD[11]	V(I/O)	GND	AD[12]
19	AD[13]	GND	AD[14]	AD[15]	3.3V
18	C/BE[1]#	PAR	3.3V	GND	SERR#
17	PERR#	GND	SBO#	SDONE	3.3V
16	LOCK#	STOP#	V(I/O)	GND	DEVSEL#
15	TRDY#	GND	IRDY#	FRAME#	3.3V
12 - 14	Key Area	Key Area	Key Area	Key Area	Key Area
11	C/BE[2]#	GND	AD[16]	AD[17]	AD[18]
10	AD[19]	AD[20]	3.3V	GND	AD[21]
9	AD[22]	GND	AD[23]	IDSEL	C/BE[3]#
8	AD[24]	AD[25]	V(I/O)	GND	AD[26]
7	AD[27]	GND	AD[28]	AD[29]	AD[30]
6	AD[31]	CLK	3.3V	GND	REQ#
5	GNT#	GND	RST#	BRSVP1B5	BRSVP1A5
4	INTS	INTP	V(I/O)	GND	BRSVP1A4
3	INTD#	5V	INTC#	INTB#	INTA#
2	TDI	TDO	TMS	5V	TCK
1	5V	+12V	TRST#	-12V	5V

CPCI-6U Expansion Board

Special Note: On CPCI-6U motion control systems having an expansion board, all computer bus data is conveyed via the main board's J1 connector, then relayed via the ribbon cable connector. Expansion boards also utilize a J1 backplane connector; however, it provides only power and ground to the expansion board.