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VMEbus P1 Daisy Chain Signals
The VMEbus specification defines two signal paths which are connected in
daisy chain fashion, meaning that they are intercepted at each card position
before being passed on the the adjacent card. These signals are associated with
bus acquisition and interrupt acknowledgement. Before plugging the V5C into
the P1 backplane, you should make sure that the backplane slot is configured
appropriately for these signals.
Installation and Interfacing
3-3
Pin
Row z Signal
Row a Signal
Row b Signal
Row c Signal
Row d Signal
1
RSRVD33
D00, Data bit 0
BBSY-
D08, Data bit 8
RSRVD1
2
GND9
D01, Data bit 1
BCLR-
D09, Data bit 9
RSRVD2
3
RSRVD34
D02, Data bit 2
ACFAIL-
D10, Data bit 10
RSRVD3
4
GND10
D03, Data bit 3
BG0IN-
D11, Data bit 11
RSRVD4
5
RSRVD35
D04, Data bit 4
BG0OUT-
D12, Data bit 12
RSRVD5
6
GND11
D05, Data bit 5
BG1IN-
D13, Data bit 13
RSRVD6
7
RSRVD36
D06, Data bit 6
BG1OUT-
D14, Data bit 14
RSRVD7
8
GND12
D07, Data bit 7
BG2IN-
D15, Data bit 15
RSRVD8
9
RSRVD37
GND1
BG2OUT-
GND8
RSRVD9
10
GND13
SYSCLK
BG3IN-
SYSFAIL-
RSRVD10
11
RSRVD38
GND2
BG3OUT-
BERR-
RSRVD11
12
GND14
DS1-
BR0-
SYSRESET-
RSRVD12
13
RSRVD39
DS0-
BR1-
LWORD-
RSRVD13
14
GND15
WRITE-
BR2-
AM5
RSRVD14
15
RSRVD40
GND3
BR3-
A23
RSRVD15
16
GND16
DTACK-
AM0
A22
RSRVD16
17
RSRVD41
GND4
AM1
A21
RSRVD17
18
GND17
AS-
AM2
A20
RSRVD18
19
RSRVD42
GND5
AM3
A19
RSRVD19
20
GND18
IACK-
GND6
A18
RSRVD20
21
RSRVD43
IACKIN-
Not used
A17
RSRVD21
22
GND19
IACKOUT-
Not used
A16
RSRVD22
23
RSRVD44
AM4
GND7
A15
RSRVD23
24
GND20
A07
IRQ7-
A14
RSRVD24
25
RSRVD45
A06
IRQ6-
A13
RSRVD25
26
GND21
A05
IRQ5-
A12
RSRVD26
27
RSRVD46
A04
IRQ4-
A11
RSRVD27
28
GND22
A03
IRQ3-
A10
RSRVD28
29
RSRVD47
A02
IRQ2-
A09
RSRVD29
30
GND23
A01
IRQ1-
A08
RSRVD30
31
RSRVD48
-12V
+5VSTDBY
+12V
RSRVD31
32
GND24
+5V1
+5V2
+5V3
RSRVD32
Table 3-3
V5C P1 Signals
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