XVME-2 12 Manual
August, 1989
Table B-l. VMEbus Signal Identification (cont’d)
Connector
Signal
and
Mnemonic
Pin Number
Signal Name and Description
SYSFAIL*
1C:lO
SYSTEM,FAIL: Open-collector driven signal that indicates
that a failure has occurred in the system. It may be
generated by any module on the VMEbus.
SYSRESET*
lC:12
SYSTEM RESET: Open-collector driven signal which, when
low, will cause the system to be reset.
WRITE*
lA:14
WRITE: Three-state driven signal that specifies the data
transfer cycle in progress to be either read or written. A
high level indicates a read operation, a low level indicates
a write operation.
+5V STDBY
lB:31
+5 VDC STANDBY: This line supplies +5 VDC to devices
requiring battery backup.
+5V
1 A:32
+5 VDC POWER: Used by system logic circuits.
lB:32
1 C:32
2B:1,13,32
+12V
-12v
1C:31
+12 VDC POWER: Used by system logic circuits.
lA:31
-12 VDC POWER: Used by system logic circuits.
B-5
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