Installation manual

Backplane Information
This section contains bus signal charts and backplane layout illustrations.
VMEbus Backplane
Cardcage slot numbers are stamped, printed, or labeled on the sheet metal near the card ejectors.
VMEbus backplane jumpers are silk-screened on the cardcage as Px00, Px01, Px02, Px03, and Px04
or Jx00, Jx01, Jx02, Jx03, and Jx04; where x represents the card slot number.
These jumpers control VMEbus signals BUS GRANT 0-3 IN (BG0-3IN) to BUS GRANT 0-3 OUT
(BG0-3 OUT), and INTERRUPT ACKNOWLEDGE IN (IACKIN) to INTERRUPT
ACKNOWLEDGE OUT (IACKOUT). The VMEbus signals are referred to as BG0, BG1, BG2, BG3,
and IACK in this section.
LABEL SIGNAL ABBREVIATION
Jxx0 Pxx0 BUS GRANT 0 BG0
Jxx1 Pxx1 BUS GRANT 0 B01
Jxx2 Pxx2 BUS GRANT 0 BG2
Jxx3 Pxx3 BUS GRANT 0 BG3
Jxx4 Pxx4 INTERRUPT
ACKNOWLEDGE
IACK
VMEbus Signals
The VMEbus consists of signals on J1/P1 Row A, J1/P1 Row B, J1/P1 Row C, and J2/P2 Row B.
P2 Bus Signals
The Sun P2 Bus consists of signals on J2/P2 Row A, J2/P2 Row C, and J3/P3 Row B.
VMEbus J1/P1 Pinouts
PIN ROW A ROW B ROW C
1 D00 BBSY* D08
2 D01 BCLR* D09
3 D02 ACFAIL* D10
4 D03 BG0IN* D11
5 D04 BG0OUT* D12
6 D05 BG1IN* D13
7 D06 BG1OUT* D14
8 D07 BG2IN* D15
9 GND BG2OUT* GND
Sun4/I: Backplane - Backplane Information
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