Xycom XVME-682 Manual page 25

X V M E - 6 8 2 Manual
October , 1989
3 . 6 PC/AT I N T E R F A C E CONNECTOR P2/P3
T h e X V M E - 6 8 2 i s m a d e i n o d d - n u m b e r e d v e r s i o n s ( X V M E - 6 8 2 / 1 & XVME-682/ 3 ) a n d even-
n u m b e r e d v e r s i o n s ( X V M E - 6 8 2 / 2 & X V M E - 6 8 2 / 4 ) . T h e e v e n - n u m b e r e d v e r s i o n s of t h e module
c a n n o t o p e r a t e wi t h a 3 2 -bi t p r o c e s s o r shari n g t h e s a m e V M E b u s backplane.
T h i s i s d u e to t h e fact that R o w B of t h e V M E b u s P 2 c o n n e c t o r i s b u s s e d to all c a r d s o n the
b a c k p l a n e . B e c a u s e t h e e v e n - n u m b e r e d X V M E - 6 8 2 v e r s i o n s u s e t h e P 2 c o n n e c t o r to send AT
s i g n a l s , t h ey c a n n o t s h a r e R o w B wi t h a 3 2 -bi t p r o c e s s o r e l s e w h e r e o n t h e backplane.
O n all versi o ns, the XT si g nal s travel on the u s e r-def i n ed I / O pi n s o n R o w s A & C of the
V M E b u s P 2 connector.
T h e pi n out s for t h e X V M E - 6 8 2 / 2 & X V M E - 6 8 2 / 4 P 2 c o n n e c t o r s a r e a s follows:
T a b l e 3 - 1 0 PC/ A T Interface Connector P2
( X V M E - 6 8 2 / 2 & XVME-682/4 Only)
ROW A
PI N #
SIGNAL
1 I/OCHCK +5V
2 SD7
3
SD6
4 SD5
5 SD4
6 SD3
7 SD2
8 SDI
9 SDO
10 IOCHRDY SD14
11 AEN
12 SA19
13 SA18
14
SA17
15 SA16
16 SAI5
17 SA14
18 SA13
19
S A I2
20 SA11
3-13
ROW B ROW C
SIGNAL SIGNAL
N/C
GND IRQ9
MEMW* DRQ2
SD8 N/C
SD9 SMEMW*
SD10 SMEMR*
SD11 IOW*
SD12 IOR*
SD13 DACK3*
DRQ3
SD15 DACK1*
GND DRQ1
+5V REFRESH*
MEMCS16*CLK
IOCS16* IRQ7
IRQ10 IRQ6
IRQI 1 IRQ5
IRQ12 IRQ4
IRQ15 IRQ3
IRQ14 DACK2*
A r t i s a n T e c h n o l o g y G r o u p - Q u a l i t y Instrunnentatio
1 ... I ( 8 8 8 ) - S O U R C E I