SHARC, cache and sdram
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From: steve on 16 Jun 2008 09:08 On Jun 16, 3:41 am, SYL <sya...(a)gmail.com> wrote: > Let's compare C6720 (64KB ram) and ADSP-21375 (0.5M-bit). What are the > reasons for choosing SHARC? I can't seem to see any, esp. C6720($8) > only cost about half of 21375($15). I don't know your specific requirement are so I can't say, but it the C6720 meets your needs I wouldn't even evaluate the SHARC due to the price difference
From: Vladimir Vassilevsky on 16 Jun 2008 09:14 steve wrote: > On Jun 16, 3:41 am, SYL <sya...(a)gmail.com> wrote: > >>Let's compare C6720 (64KB ram) and ADSP-21375 (0.5M-bit). What are the >>reasons for choosing SHARC? I can't seem to see any, esp. C6720($8) >>only cost about half of 21375($15). > > > > I don't know your specific requirement are so I can't say, but it the > C6720 meets your needs I wouldn't even evaluate the SHARC due to the > price difference You seem to be advocating SHARC without providing any specific arguments. Is it a matter of religion? Vladimir Vassilevsky DSP and Mixed Signal Design Consultant http://www.abvolt.com
From: Jerry Avins on 16 Jun 2008 10:41 Vladimir Vassilevsky wrote: > > > steve wrote: >> On Jun 16, 3:41 am, SYL <sya...(a)gmail.com> wrote: >> >>> Let's compare C6720 (64KB ram) and ADSP-21375 (0.5M-bit). What are the >>> reasons for choosing SHARC? I can't seem to see any, esp. C6720($8) >>> only cost about half of 21375($15). >> >> >> >> I don't know your specific requirement are so I can't say, but it the >> C6720 meets your needs I wouldn't even evaluate the SHARC due to the >> price difference > > You seem to be advocating SHARC without providing any specific > arguments. Is it a matter of religion? How does "I wouldn't even evaluate the SHARC" amount to advocacy? Jerry -- Engineering is the art of making what you want from things you can get. �����������������������������������������������������������������������
From: steve on 16 Jun 2008 12:22 On Jun 16, 9:14 am, Vladimir Vassilevsky <antispam_bo...(a)hotmail.com> wrote: > steve wrote: > > On Jun 16, 3:41 am, SYL <sya...(a)gmail.com> wrote: > > >>Let's compare C6720 (64KB ram) and ADSP-21375 (0.5M-bit). What are the > >>reasons for choosing SHARC? I can't seem to see any, esp. C6720($8) > >>only cost about half of 21375($15). > > > I don't know your specific requirement are so I can't say, but it the > > C6720 meets your needs I wouldn't even evaluate the SHARC due to the > > price difference > > You seem to be advocating SHARC without providing any specific > arguments. Is it a matter of religion? > > Vladimir Vassilevsky > DSP and Mixed Signal Design Consultanthttp://www.abvolt.com ?I only mentioned that if you needed 3mbit floating point DSP, there wasn't a similar alternative to the SHARC, that's pretty specific. I think your reading between the lines too much and not the actual lines themselves
From: Al Clark on 17 Jun 2008 09:48
steve <bungalow_steve(a)yahoo.com> wrote in news:ae9e8191-9677-47a6-9d66- 9b2e52b530d2(a)p25g2000hsf.googlegroups.com: > On Jun 16, 3:41�am, SYL <sya...(a)gmail.com> wrote: >> Let's compare C6720 (64KB ram) and ADSP-21375 (0.5M-bit). What are the >> reasons for choosing SHARC? I can't seem to see any, esp. C6720($8) >> only cost about half of 21375($15). > > > I don't know your specific requirement are so I can't say, but it the > C6720 meets your needs I wouldn't even evaluate the SHARC due to the > price difference First of all, the ADSP-21375 does not cost $15, unless you are dealing with very small quantities. If this is the case, the cost of development will completely overshadow any price differences in chips. We use the ADSP-21371 (a bigger brother of the 21375) on some new boards. It is supported by DSP Concepts' Audio Weaver which might be very useful in your case. In any case, I would maintain that SHARC's are much easier to program than the TI DSPs. In audio space, SHARCs are much more popular. You haven't really described your application. My observation is that the internal peripherals and supporting cast of surrounding hardware also play significantly into these decisions. Al Clark Danville Signal Processing, Inc. |