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lIO Backplane Pinout Data
0-3
Table 0-2. I/O Backplane Signal Definitions
Signal
Definition
-12
-12 volt supply.
12
12 volt supply.
5
5 volt supply.
5BB
5 volt supply, battery backup.
5P
Primary 5 volt supply.
5S
Secondary 5 volt supply.
AC-
25 KHz ac sine wave from power supply.
AC+
25 KHz ac sine wave from power supply.
CCLK
Common clock.
GND
Ground plane of 110 backplane.
100
110 door open.
lOOP
110 door open (not used).
NARQ
HP-CIO card requests attention (negative true).
NBR
110 bus burst mode DMA request (negative true).
NDEND
110 bus device end (negative true).
NDPA
Internal select code available (negative true).
NFLG
110 bus ready for data (negative true).
NICI
110 bus interface control bit 1 (negative true).
NIC2
110 bus interface control bit 2 (negative true).
NIC3
110 bus interface control bit 3 (negative true).
NIC4
110 bus interface control bit 4 (negative true).
NIDO
110 door open (negative true).
NIFC
I/O bus interface clear (negative true).
NIODO
110 bus input/output data bit 0 (negative true).
NIODI
110 bus input/output data bit 1 (negative true).
NIOD2
110 bus input/output data bit 2 (negative true).
NIOD3
110 bus input/output data bit 3 (negative true).
NIOD4
110 bus input/output data bit 4 (negative true).
NIOD5
110 bus input/output data bit 5 (negative true).
NIOD6
110 bus input/output data bit 6 (negative true).
NIOD7
110 bus input/output data bit 7 (negative true).
NIOD8
110 bus input/output data bit 8 (negative true).
NIOD9
110 bus input/output data bit 9 (negative true).
NIODI0
110 bus input/output data bit 10 (negative true).
NIODll
110
bus input/output data bit 11 (negative true).
NIOD12
110 bus input/output data bit 12 (negative true).
NIOD13
110 bus input/output data bit 13 (negative true).
NIOD14
I/O bus input/output data bit 14 (negative true).
NIOD15
110 bus input/output data bit 15 (negative true).
NIOSB
110 bus data transfer strobe (negative true).
NMYPA
HP-CIO card recognized its address has been asserted (negative true).
NNMI
Non--maskable interrupt (negative true).
NPAO
110
bus peripheral address bit 0 (negative true).
NPAI
110 bus peripheral address bit 1 (negative true).
NPA2
110 bus peripheral address bit 2 (negative true).
NPA3
110 bus peripheral address bit 3 (negative true).
NPFW
Power fail warning (negative true).
NPOLL
110
bus interface poll (negative true).
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