PCI Bus Connector Layout

PCI Bus Connector Layout (124-Pin)
PCI Local Bus Specifications - Revision 2.0 

The PCI bus runs synchronous to the system microprocessor. For the Type 1 system board the PCI bus is driven at 33MHz, for Type 2 system board it is driven at 30MHz. Each PCI connector I/O signal is capable of driving one low-power Schottky load.

The PCI bus shares interrupts with the EISA bus. IRQ 5, 11 or 15 can be assigned to the PCI bus through the Setup Utility. Precautions must be taken to ensure that the IRQs are assigned to the correct bus, otherwise, adapters might not work correctly.

  124-pin PCI-Connector


NOTE: 3.52Vdc is supplied through an opt. 5Vdc to 3.52 Vdc regulator.

Pin	Signal	Pin	Signal
A1	-TRST	B1	-12 V
A2	+12 V	B2	TCK
A3	TMS	B3	Ground
A4	TDI	B4	TDO
A5	+5 V	B5	+5 V
A6	-INTA	B6	+5 V
A7	-INTC	B7	-INTB
A8	+5 V	B8	-INTD
A9	Reserved	B9	-PRSNT1
A10	+5 V (I/O)	B10	Reserved
A11	Reserved	B11	-PRSNT2
A12	Ground	B12	Ground
A13	Ground	B13	Ground
A14	Reserved	B14	Reserved
A15	-RST	B15	Ground
A16	+5 V (I/O)	B16	CLK
A17	-GNT	B17	Ground
A18	Ground	B18	-REQ
A19	Reserved	B19	+5 V (I/O)
A20	AD(30)	B20	AD(31)
A21	+3.52 Vdc	B21	AD(29)
A22	AD(28)	B22	Ground
A23	AD(26)	B23	AD(27)
A24	Ground	B24	AD(25)
A25	AD(24)	B25	+3.52 Vdc
A26	IDSEL	B26	-C/BE(3)
A27	+3.52 Vdc	B27	AD(23)
A28	AD(22)	B28	Ground
A29	AD(20)	B29	AD(21)
A30	Ground	B30	AD(19)
A31	AD(18)	B31	+3.52 Vdc
A32	AD(16)	B32	AD(17)
A33	+3.52 Vdc	B33	-C/BE(2)
A34	-FRAME	B34	Ground
A35	Ground	B35	-IRDY
A36	-TRDY	B36	+3.52 Vdc
A37	Ground	B37	-DEVSEL
A38	-STOP	B38	Ground
A39	+3.52 Vdc	B39	-LOCK
A40	SDONE	B40	-PERR
A41	-SBO	B41	+3.52 Vdc
A42	Ground	B42	-SERR
A43	PAR	B43	+3.52 Vdc
A44	AD(15)	B44	-C/BE(1)
A45	+3.52 Vdc	B45	AD(14)
A46	AD(13)	B46	Ground
A47	AD(11)	B47	AD(12)
A48	Ground	B48	AD(10)
A49	AD(09)	B49	Ground
A50	Key	B50	Key
A51	Key	B51	Key
A52	C/BE(0)	B52	AD(08)
A53	+3.52 Vdc	B53	AD(07)
A54	AD(06)	B54	+3.52 Vdc
A55	AD(04)	B55	AD(05)
A56	Ground	B56	AD(03)
A57	AD(02)	B57	Ground
A58	AD(00)	B58	AD(01)
A59	+5 V (I/O)	B59	+5 V (I/O)
A60	-REQ64	B60	-ACK64
A61	+5 V	B61	+5 V
A62	+5 V	B62	+5 V