To: "Xylo-SDR Discussion" <xylo-sdr@lists.ae5k.us> Sent: Sunday, December 18, 2005 4:11 PM Subject: Re: [Xylo-SDR] Firewire, DSP and FPGA on one module
The TMS320C6713B DSK comes with free development tools but you need to purchase the DSK. I greatly prefer this chip to any of the alternatives. You can get it to run at 300 MHz and draw very small power. For most SDR applications, you easily run entirely off on chip memory. It runs fast in float modes. The DSK, which comes with development tools is $450 or so. Lyle, Howard Long (G3LVB), Chuck Green (N0ADI), Frank Brickle (AB2KT), and I are working on hardware and software using this part at its heart fir AMSAT SDR based transponders. The drawback to the free development tools with the DSK is that you hope you get a bug free version since it does not appear that they upgrade the freeware once you have installed.
It's the same with the ADI Blackfin kit I've got, as well as the SHARC (32-bit floating-point DSP) kits, although the Stamp Blackfin kit comes with GNU tools. Blackfin is fixed-point, of course. It's very fast, though (500 MIPS or so) and could do floating-point in software at adequate speed for audio processing. That is what I did with the earlier ADSP-2187 system I worked with, it actually performed the required computations as fast as the Pentium used for developing the software.
Leon
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