Specifications

Configuration and Installation
2 2
2-5
xxxOUT
xxxIN
xxxOUT
xxxIN
xxxOUT
xxxIN
VMEbus Slots
xxxIN
xxxOUT
Figure 2-2. Daisy-Chain Signal Concept.
The daisy-chain signal concept is shown in Figure 2-2. The Slot-1 controller board
initiates each daisy-chain signal. Each VMEbus slot to the right of the Slot-1
controller must pass through each of the daisy-chain signals. For each VMEbus slot,
xxxIn pin must be connected to its corresponding xxxOut pin (e.g. BG0In to
BG0Out , BG1In to BG1Out ,..., IackIn to IackOut ) either through the board
in that slot or by jumpers. (Boards that meet VMEbus specifications correctly handle
the signals and do not need backplane jumpers. However, many early designs may not
propagate these signals correctly.) may not handle any of these signals. Check the
manual for each board to be installed to determine if these signals are passed through
correctly. If they are not, or if the VMEbus slot is empty, all (or some) of these
signals must be jumpered. See Figures 2-3 and 2-4 on the following pages for
examples.
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