RadiSys P3000BX2 Series, Руководство по обслуживанию

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Technical Data
36 EPC-2322 (P3000(D)BX2 Series) Service Manual
ISA and PCI Bus Connectors
Overview
The P3000(D)BX2 utilizes a 16-bit ISA bus and a 32-bit PCI local bus.The tables
below list the pin signals for the ISA and PCI bus connectors. The following illustration
(
Figure 12 ) indicates the pin positions for each.
PCI Interrupts
The PCI Bus provides four (4) interrupts: INTA, INTB, INTC, and INTD. These
interrupts can be shared, meaning two or more devices can operate on a common
interrupt. Also, PCI interrupts are level-sensitive. Each PCI interrupt must be routed to
one of the standard AT interrupts for the PCI device to function. If a PCI interrupt is not
used, it will not be routed to the ISA bus.
ISA Bus Connector PCI Bus Connector
Pin Row B Row A Pin Row D Row C Pin Row B Row A Pin Row B Row A
1 GND IOCHK/ 1 MEMC16/ SBHE/ 1 -12 V TRST# 32 AD17 AD16
2 RESDRV SD7 2 IOCS16/ LA23 2 TCK +12V 33 C/BE#2 +3.3 V
3 +5 V SD6 3 IRQ10 LA22 3 GND TMD 34 GND FRAME#
4 IRQ2 SD5 4 IRQ11 LA21 4 TDO TDI 35 IRDY# GND
5 -5 V SD4 5 IRQ12 LA20 5 +5 V +5 V 36 +3.3 V TRDY#
6 DRQ2 SD3 6 IRQ15 LA19 6 +5 V INTA 37 DEVSEL# GND
7 -12 V SD2 7 IRQ14 LA18 7 INTB INTC 38 GND STOP#
8 0WS SD1 8 DACK0/ LA17 8 INTD +5 V 39 LOCK# +3.3 V
9 +12 V SD0 9 DRQ0 MEMR/ 9 REQ3# CLKC 40 PERR# SDONE
10 GND IOCHRDY/ 10 DACK5/ MEMW/ 10 REQ1# +5 V (I/O) 41 +3.3 V SBO#
11 SMEMW/ AEN 11 DRQ5 SD8 11 GNT3# CLKD 42 SERR# GND
12 SMEMR/ SA19 12 DACK6/ SD9 12 GND GND 43 +3.3 V PAR
13 IOW/ SA18 13 DRQ6 SD10 13 GND GND 44 C/BE#1 AD15
14 IOR/ SA17 14 DACK7/ SD11 14 CLKA GNT1# 45 AD14 +3.3 V
15 DACK3/ SA16 15 DRQ7 SD12 15 GND RST# 46 GND AD13
16 DRQ3 SA15 16 +5 V SD13 16 CLKB +5 V (I/O) 47 AD12 AD11
17 DACK1/ SA14 17 MASTER/ SD14 17 GND GNT0# 48 AD10 GND
18 DRQ1 SA13 18 GND SD15 18 REQ0# GND 49 GND AD9
19 REF/ SA12 19 +5 V (I/O) REQ2# 50 Key Key
20 SYSCLK/ SA11 20 AD31 AD30 51 Key Key
21 IRQ7 SA10 21 AD29 +3.3 V 52 AD8 C/BE#0
22 IRQ6 SA9 22 GND AD28 53 AD7 +3.3 V
23 IRQ5 SA8 23 AD27 AD26 54 +3.3 V AD6
24 IRQ4 SA7 24 AD25 GND 55 AD5 AD4
25 IRQ3 SA6 25 +3.3 V AD24 56 AD3 GND
26 DACK2/ SA5 26 C/BE#3 GNT2# 57 GND AD2
27 T/C SA4 27 AD23 +3.3 V 58 AD1 AD0
28 SALE SA3 28 GND AD22 59 +5 V (I/O) +5 V (I/O)
29 +5 V SA2 29 AD21 AD20 60 ACK64# REQ64#
30 OSC SA1 30 AD19 GND 61 +5 V +5 V
31 GND SA0 31 +3.3 V AD18 62 +5 V +5 V
Do not map a PCI interrupt to an AT interrupt that is already being used by an
ISA device. The ISA device occupying that interrupt will not function properly.
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