1 Big discussion via email yesterday motivated by Chuck about whether we can add
2 a capability to use the Can-Do modules as a bit pipe between a CPU in the
3 experiment module and the IHU. The end result is that yes, we can do it.
5 My proposal is that we implement byte-wide in and out busses. Two of the
6 "spare" outputs and two of the analog input channels get taken over to serve
7 as request/acknowledge handshake lines. The remaining analog inputs and the
8 remaining two digital outputs continue to behave as they would in "normal"
9 mode. Data is always sent in blocks of 8 bytes. The module's stream addresses
10 for this capability are the same as for the command/control protocol but with
11 the high order bit flipped, so that this bit-pipe function runs at lower
12 priority than command and telemetry.