Xycom XVME-682 Manual page 42

X V M E - 6 8 2 Manual
October , 1989
Appendix A
V M E b u s C O N N E C T O R / P I N DESCRIPTION
T a b l e A-1 J1 - V M E b u s S i g n a l Identification
Connector
Signal and
Mnemonic P i n Number S i g n a l N a m e a n d Description
ACFAIL* 1B:3 A C F A I L U R E : O p e n -col l e ct o rs dri v en si g nal w h i c h indicates that
t h e A C i n put to t h e p o w e r s u p p l y i s n o l o nger b e i n g provided, or
t h at t h e requi r ed i n put vol t a ge l e vel s are not bei n g met.
*
IACKIN 1A:21 I N T E R R U P T A C K N O W L E D G E IN: T ot e m- p o l e dri v en signal.
I A C K I N * and I A CKOUT* si g nal s form a dai s y-chained
a c k n o w l e d g e . The I A C K I N * si g nal i n di c at e s to t h e V M E board
t h at a n a c k n o w l e d g e cycl e i s i n progress.
IACKOUT* 1A:22 I N T E R R U P T A C K N O W L E D G E O U T : T o t e m - p o l e dri v en signal.
I A C K I N * and I A C K O U T * si g nal s form a dai s y-chained
a c k n o w l e d g e . T h e I A C K O U T * s i g n a l i n d i c a t e s t o t h e n e x t board
t h at a n a c k n o w l e d g e cycl e i s i n progress.
AMO-AM5
1A:23 A D D R E S S M O D I F I E R (bi t s 0-5): Three-st a t e dri v en l i n es that
1B:16,17, p r o v i d e addi t i o nal i n formati o n a b o u t t h e a d d r e s s b u s , such as:
18,19 s i z e , c y c l e t y p e , a n d / o r D T B m a s t e r identification.
1C:14
AS*
IA:18 A D D R E S S S T R O B E : T h r e e - s t a t e d r i v e n s i g n a l that indicates a
v a l i d a d d r e s s i s o n t h e address bus.
A 0 1 -A23 1A:24-30 A D D R E S S B U S (bi t s 1 - 2 3 ) : T h r e e - s t a t e d r i v e n a d d r e s s l i n es that
1C:15-30 s p e c i f y a m e m o r y address.
A 2 4 -A31
2B:4-11
A D D R E S S B U S (bi t s 2 4 - 3 1 ) : T h r e e - s t a t e d r i v e n b u s expansion
a d d r e s s lines.
A-1
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 I n s t r u m e n t a t i o n .. G u a r a n t e e d I ( 8 8 8 ) 8 8 I www.artisantg.com