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Dear friends;
I have experience for working with C6X family of TMS DSPs. But now a 
telephoney project with TMS320C54CST has been suggested to me. I was 
very eager to do it. but when I saw some previous experiences like 
the text bellow from ALEX in "embededrelated" group I am worry 
because I must do it in 8 months for a company. What is your idea do 
I accept it or no? I am in iran and so I may have the eastern 
problems that alex said.
could I use any C6000 DSP for telephoney work?

thanks for your advise.

Alex wrote:
"I have attemted to put the CST in one of our projects about 2 years 
ago.
TI was very interested as they give us a free Evaluation Board and 
all the software.
And I know DSP. This would have been the 14th large DSP Project for 
me.
Howerver, we could not use the CST because of multipe non engineering 
related issues.

For instance, what they call a reference design is in reality a 
cumulation
of exerpts from many other documets that have no conection with each 
other.
They call their document a data sheet :) Any time you need information
about the CST you are sent to an other chip's document. It was really 
frustating
dealing with the documentation.
Most of the documents have been written by the rusian software 
company that
has made the soft/firmware. They do not have a good comand of the 
English language
and as such many phrase constructs do not make sense. A language 
barrier.

The simplest programm, "hello world" is so obscure that is 
incomprehensible.

And worst of all you need to pay for the technical support!

The CST is a cludge of three partners, TI makes a generic chip, 
Spirit writes the
firmware, and Spectrum makes the Eval Board. If you have a problem, 
you are
passed around between thse three partners as a ping pong ball :)
I needed to get the project done in 4 months. To answer a question it 
took them 2 months.

Also, if you intend to deploy your product in a western country whith 
a good and
established telephony standard the CST will work. But try to use it 
in India Poland Romania
or Turkey and you are in for a real surprise. 

I took their Eval Board on a tour of Eastern Europe and it did not 
work there. The
problem are the SIT tones which are non standard there. The Dial and 
Ring Back tones 
are the most problematic. You will end up needing to write a LOT of 
code.

I gave up on CST fast. Sory to have to say all of this ( and I keept 
it short and sweet:) 
but perhaps I will spare you some later grief.

Alex.
Sand Labs Research
www.sandlabs.com"

please reply me asap.
thanks for your advice.
regards

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