[tremor] Minimum hardware requirements

[Jerry Durand]

At 09:16 PM 1/29/2003, you wrote:
>Johnny Egeland wrote:
> >
> > - Minimum amount of RAM needed for decoding (excluding anything that can be
> > stored in static lookup tables).
>
>DRAM?  Just get 4MB or so, dram is cheap.

Not all DSPs support DRAM.  That's an extravagance for the higher end 
ones.  DRAM is also WAY slow for a DSP.  It's like using floppy disks on a 
PC (good for storing things that you don't need often).

<p>> > - Minimum amount of program memory (ROM) needed to hold the decoder
> > (estimates are fine). I'm most interested in knowing the size of only the
> > decoding part of Tremor.
>
>Minimum?  16kB or so.  But then again, flash is cheap, too, so just get
>128kB or more.

They don't make 10nS FLASH, so all us DSP guys have to copy the code to 
SRAM to run it.  So, we really DO care about the amount of memory.  In one 
of my typical designs, the SRAM draws 5X or more power than the DSP and 
costs more, too.

<p><p>----------
Jerry Durand
Durand Interstellar, Inc.
219 Oak Wood Way
Los Gatos, California 95032-2523  USA
tel:  +1 408 356-3886
fax:  +1 408 356-4659
web:  www.interstellar.com

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