I want to use 3 TMS320Cxx DSP for different acquisition signals , and which require high rate. Do you think using SPI would be better than SCI ? thank you
How to make communicate 2 or 3 DSP TMS320Cxx
Started by ●February 5, 2004
Reply by ●February 6, 20042004-02-06
hi, u have serveral ports for the purpose. The McBSP, HPI, Expansion interfaces or even the EMIF. Most of the interfacing could be achieved glueless. amar domistep@free.fr (domistep) wrote in message news:<11efef01.0402051051.6ff942a1@posting.google.com>...> I want to use 3 TMS320Cxx DSP for different acquisition signals , and > which require high rate. > Do you think using SPI would be better than SCI ? > thank you
Reply by ●February 6, 20042004-02-06
"domistep" <domistep@free.fr> wrote in message news:11efef01.0402051051.6ff942a1@posting.google.com...> I want to use 3 TMS320Cxx DSP for different acquisition signals , and > which require high rate. > Do you think using SPI would be better than SCI ? > thank youCan you define 'high rate' ?
Reply by ●February 6, 20042004-02-06
domistep wrote:> I want to use 3 TMS320Cxx DSP for different acquisition signals , and > which require high rate. > Do you think using SPI would be better than SCI ? > thank youBoth are serial protocols. The data sheet will tell you if they can go fast enough to concentrate in one place the data collected by three processors sampling at a "high rate". If a processor has time to receive two samples while collecting its own, could it collect all three if it didn't need to receive any? To paraphrase Dijkstra, You cannot sharpen a pencil with a dull ax. Three dull axes won't do better. Jerry -- Engineering is the art of making what you want from things you can get. �����������������������������������������������������������������������
Reply by ●February 8, 20042004-02-08
"Graeme" <graeme@hotmail.com> wrote in message news:<bvvf7r$10vl3c$1@ID-154333.news.uni-berlin.de>...> "domistep" <domistep@free.fr> wrote in message > news:11efef01.0402051051.6ff942a1@posting.google.com... > > I want to use 3 TMS320Cxx DSP for different acquisition signals , and > > which require high rate. > > Do you think using SPI would be better than SCI ? > > thank you > > Can you define 'high rate' ?High rate would be less than 1 Mhz
Reply by ●February 8, 20042004-02-08
domistep wrote:> "Graeme" <graeme@hotmail.com> wrote in message news:<bvvf7r$10vl3c$1@ID-154333.news.uni-berlin.de>... > >>"domistep" <domistep@free.fr> wrote in message >>news:11efef01.0402051051.6ff942a1@posting.google.com... >> >>>I want to use 3 TMS320Cxx DSP for different acquisition signals , and >>>which require high rate. >>>Do you think using SPI would be better than SCI ? >>>thank you >> >>Can you define 'high rate' ? > > > High rate would be less than 1 MhzWould this be 1 Mega BYTE, 1 Mega WORD, or 1 Mega LONG ???
Reply by ●February 8, 20042004-02-08
hamilton wrote:> domistep wrote: > >> "Graeme" <graeme@hotmail.com> wrote in message >> news:<bvvf7r$10vl3c$1@ID-154333.news.uni-berlin.de>... >> >>> "domistep" <domistep@free.fr> wrote in message >>> news:11efef01.0402051051.6ff942a1@posting.google.com... >>> >>>> I want to use 3 TMS320Cxx DSP for different acquisition signals , and >>>> which require high rate. >>>> Do you think using SPI would be better than SCI ? >>>> thank you >>> >>> >>> Can you define 'high rate' ? >> >> >> >> High rate would be less than 1 Mhz > > > Would this be 1 Mega BYTE, 1 Mega WORD, or 1 Mega LONG ???Per channel? Jerry -- Engineering is the art of making what you want from things you can get. �����������������������������������������������������������������������
Reply by ●February 9, 20042004-02-09
Sorry for the laxk of information. It would be for less than 7000 words per second Jerry Avins <jya@ieee.org> wrote in message news:<4026ad13$0$3186$61fed72c@news.rcn.com>...> hamilton wrote: > > domistep wrote: > > > >> "Graeme" <graeme@hotmail.com> wrote in message > >> news:<bvvf7r$10vl3c$1@ID-154333.news.uni-berlin.de>... > >> > >>> "domistep" <domistep@free.fr> wrote in message > >>> news:11efef01.0402051051.6ff942a1@posting.google.com... > >>> > >>>> I want to use 3 TMS320Cxx DSP for different acquisition signals , and > >>>> which require high rate. > >>>> Do you think using SPI would be better than SCI ? > >>>> thank you > >>> > >>> > >>> Can you define 'high rate' ? > >> > >> > >> > >> High rate would be less than 1 Mhz > > > > > > Would this be 1 Mega BYTE, 1 Mega WORD, or 1 Mega LONG ??? > > Per channel? > > Jerry
Reply by ●February 9, 20042004-02-09
domistep wrote:> Sorry for the laxk of information. > It would be for less than 7000 words per second... Overall, or per channel? Either way, it's not very rapid by the standards of CD audio. Jerry -- Engineering is the art of making what you want from things you can get. �����������������������������������������������������������������������
Reply by ●February 19, 20042004-02-19
