Xycom XVME-100, Manual

Page: 38 / 60

X V M E - 1 0 0 M a n u a l
March, 1987
Signal
Mnemonic
Connector
and
Pin N u m b e r
Signal N a m e a n d D e s c r i p t i o n
S Y S FA I L *
1C:10 S Y S T E M F A I L : O p e n - c o l l e c t o r d r i v e n s i g n a l t h a t
indicates t h a t a f a i l u r e h a s o c c u r r e d i n t h e system. I t
may be generated b y a n y m o d u l e o n t h e V M E b u s .
SYSR ESET*
1C:12 S Y S T E M R E S E T: O p e n - c o l l e c t o r d r i v e n s i g n a l w h i c h ,
when l o w, w i l l cause t h e system t o be reset.
W R I T E *
IA:14
WRITE: T h r e e -state d r i v e n s i g n a l t h a t s p e c i f i c s t h e
data t r a n s f e r c y c l e i n p r o g r e s s t o b e e i t h e r r e a d o r
w r i t t e n . A h i g h l e v e l i n d i c a t e s a r e a d o p e r a t i o n , a l o w
level i n d i c a t e s a w r i t e o p e r a t i o n .
+5V S T D B Y 1B:31
+5 V D C S TA N D B Y : T h i s l i n c su5 V D C t o devices
r e q u i r i n g b a t t e r y b a c k u p .
+5V
1A:32
+5 V D C POWER: Used b y system l o g i c c i r c u i t s .
1B:32
1C:32
28:1,13,32
+12V 1C:31
+12 V D C POWER: Used b y system l o g i c c i r c u i t s .
-12V 1A:31
-12 V D C POWER: Used b y system l o g i c c i r c u i t s .
•
•
Ta b l e A - I . V M E b u s Signal I d e n t i f i c a t i o n ( c o n t ' d )
A-5