XVME-682 Manual
October, 1989
Signal
Mnemonic
Connector
and
Pin Number Signal Name and Description
ACFAIL*1B:3
AC FAILURE: Open-collectors driven signal which indicates that
the AC input to the power supply is no longer being provided, or
that the required input voltage levels are not being met.
*
IACKIN 1A:21 INTERRUPT ACKNOWLEDGE IN: Totem-pole driven signal.
IACKIN* and IACKOUT* signals form a daisy-chained
acknowledge. The
IACKIN*
signal indicates to the VME board
that an acknowledge cycle is in progress.
IACKOUT*
1A:22 INTERRUPT ACKNOWLEDGE OUT: Totem-pole driven signal.
IACKIN*
and IACKOUT* signals
form a daisy-chained
acknowledge. The IACKOUT* signal indicates to the next board
that an acknowledge cycle is in progress.
AMO-AM5
1A:23 ADDRESS MODIFIER (bits 0-5): Three-state driven lines that
1B:16,17,
provide additional information about the address bus, such as:
18,19
size, cycle type, and/or DTB master identification.
1C:14
AS*
IA:18
ADDRESS STROBE: Three-state driven signal that indicates a
valid address is on the address bus.
A01-A23 1A:24-30
ADDRESS BUS (bits 1-23): Three-state driven address lines that
1C:15-30
specify a memory address.
A24-A31
2B:4-11
ADDRESS BUS (bits 24-31): Three-state driven bus expansion
address lines.
Appendix A
VMEbus CONNECTOR/PIN DESCRIPTION
Table A-1 J1 - VMEbus Signal Identification
A-1
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Содержание XVME-682
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