What would you do with faster DSP parts? You could increase the 3rd IF
passband or provide more exotic filtering. I'm not sure it would make
a big difference for most people. Providing a dedicated DSP for a sweep
display might be a good thing.
On the other hand, a faster control processor might benefit everyone -
fewer hangups, etc.
Martin
--- Bob Cunnings <cunnings@lectrosonics.com> wrote:
> As for the Sharc DSP parts, they appear to be misidentified on the
> schematic. I believe they are AD21065L, really, right? I've never
> heard of
> an AD21D56L.
>
> If so, the 21065 ran at a maximum of 66 MHz, while the next
> generation 21161
> (for instance, just one member of the 2116x family) runs at a maximum
> speed
> of 100 MHz. However, the 21161 has 2 floating point units, whereas
> the 21065
> has only one... so in theory a 3x performance boost can be realized
> with the
> newer part.
>
> Here we've used the 21161 in recent products, but it's quite
> impractical to
> touch the existing 21065 designs; there is nothing remotely close to
> a
> drop-in upgrade possible because of the huge differences between
> Sharc
> generations.
>
> RC
>
> -----Original Message-----
> From: tentec-bounces@contesting.com
> [mailto:tentec-bounces@contesting.com]On Behalf Of Bernard(wtrone)
> Sent: Wednesday, March 16, 2005 9:27 PM
> To: tentec@contesting.com
> Subject: [TenTec] Orion Processing
>
>
> I don't know if I have seen the numbers (operating speed, etc.)
> for the
> Orion's processor and DSP chips/ units. Does anyone have them?
> Since this
> design is probably going on 3 years old, what capabilities do the
> newer
> processors and DSPs have? If you believe in Moore's law, then the
> speed
> should be 2-4 times faster. I'm also wondering if the newer
> processors and
> DSPs are pin for pin compatible with the current ones.
>
> Why am I curious?
>
> Well, there has been some discussion on this board about a
> complete
> rewrite of the code, version 2.XXXXX. It could be that the new code
> will
> run "better" with faster processors, or, maybe, need better
> processors.
> And, a faster set of processors just may "solve" some of the problems
> with
> the sweep, and add a little more capability elsewhere.
>
> Just sort of thinking out loud.
>
> 73,
>
>
> Bernard, WA4OEJ
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