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If you
are accessing both program and data memory from the external memory bank then
the accesses are serialized. If you have it configured to access say program
internally and data externally then the accesses are done in parallel. So
locating both progam and data externally and accessing this memory at the same
time will significantly impact your processing speed. Locating either the data
or program externally, but not both, will not slow the processing assuming you
have no wait state external memory.
Of course all this
management of what memory is accessed and the possible serializing of the
accesses are performed by the chip and don't require any special software.
Also in parallel reads the second parallel read parameter is always from
internal Data Ram. Thanks.
-
Bill
Hi!
I have read in the
DSP56800FM manual that the ex. DSP56F807 can
access both program and data
memory at the same time.
Can anybody tell me how this works with the
external memory
configured as on the evaluation board(DSP56F807EVMUM
p.54+56). As I
read it only one memory area can be W/R at a time.?
Thank you
Michael
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