Specifications

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Those DSP inputs or outputs that are not used by the program are "dead" - no signals are
passed by them. Knowing which inputs and outputs a program uses can affect which
routing configuration you choose to use. You probably wouldn’t want to place a program
that only utilized two inputs after a program that utilized four outputs because two of
those outputs would be connected to "dead" inputs.
(Of course, it wouldn’t hurt anything if you did, but
the signals at the two outputs connected to "dead" inputs would be "lost.")
This scenario is depicted in the
diagram above.
It’s important for you to think about which inputs and which outputs from DSP A and
DSP B are "dead" in the context of the routing configuration you’ve chosen.
Nevertheless, things usually work out more easily than this brief warning might cause you
to believe!
 For more information on this topic, including examples, see Programs’ Effect on Routing Decisions on page
69.