eyckmans@esat2.kulesat.uucp (09/08/88)
Hello, I am looking for a kind of FFT processor. Everybody I ask, tells me that there exists a chip with the FFT algorithm build in in hardware, but nobody knows which company sells them or where to get info. My last hope is the net. I am working on a data-acquisition system build around an 8 bit micro- controller. On the collected data, an FFT should be executed but the microcon- troller is not fast enough to do this. So what I want is a chip to which I pass all of the data and it should give me back the frequency contents of the sampled signal. I hope somebody out there knows a company or part number or magazine where I can get information. Thanks P.S.:Hope I didn't make too much mistakes against the english language.
david@mplvax.nosc.MIL (David Almagor) (09/11/88)
In article <195@esat2.kulesat.uucp>, eyckmans@esat2.kulesat.uucp writes: > > Hello, > > I am looking for a kind of FFT processor. Everybody I ask, tells me > that there exists a chip with the FFT algorithm build in in hardware, but > nobody knows which company sells them or where to get info. My last hope is > the net. > I am working on a data-acquisition system build around an 8 bit micro- > controller. On the collected data, an FFT should be executed but the microcon- > troller is not fast enough to do this. So what I want is a chip to which I pass > all of the data and it should give me back the frequency contents of the sampled > signal. > I hope somebody out there knows a company or part number or magazine > where I can get information. > Thanks > P.S.:Hope I didn't make too much mistakes against the english language. OK, I goofed the first time - I didn't include the original article, hope this one's better: There are a bunch of companies nowadays which have general purpose DSP processors to do this job, and canned routines that you can use, and this probably is your cheapest solution. A few of them are: TI: TMS32010 - the basic one, will do this job probably. Analog Devices: ADSP2100 Motorola: 56000 AT&T: DSP32 Another way to go is the one you are considering. I think it is more expensive, but one would have to look at the required speeds and dynamic ranges required. One company that comes to mind is : Zoran Inc. out of somewhere in silicone vally - they make FFT chips. Hope this helps, David. -- David Almagor | Phone 619-534-1813 | The Marine Physical lab| or: 619-442-3451 ext. 3173 | UCSD, San Diego, | |david@mplvax.nosc.mil Ca 92152 | |
raj@bu-cs.BU.EDU (S Rajagoalan) (09/13/88)
NEC has a chip with a number like 77230 (approx) which is a chip for DSP applns with on chip FFT routines and complete floating point computations. I worked on it last summer and I found it quite fast. Raj