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Summer Research Progress: Week 3 – DSP vs FPGA

URL:. Summer Research Progress: Week 3 – DSP vs FPGA. Ross Keyes, Ajo Maret Department of Electrical and Computer Engineering Temple University. Cost comparisons. All values are taken from the Digi-key website Texas Instruments C5505 (our chip): $11.50 Texas Instruments C5515: $14.00

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Summer Research Progress: Week 3 – DSP vs FPGA

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  1. URL: Summer Research Progress: Week 3 – DSP vs FPGA Ross Keyes, Ajo Maret Department of Electrical and Computer Engineering Temple University

  2. Cost comparisons • All values are taken from the Digi-key website • Texas Instruments C5505 (our chip): $11.50 • Texas Instruments C5515: $14.00 • Xilinx Spartan 3A: $5.50 - 70.92 • Xilinx Spartan 2: $7.10 - 30.15 • Xilinx Vertex 4: $109 - 5,856 • Xilinx Vertex 5: $240 – 11,734

  3. Data • The data must come in to the program in manageable sizes • The original signal might be simply to huge for the computer to handle • However I/O adds a significant amount of time to the process • The more data you can store in memory the faster the program will run

  4. Simulink Flow-Chart (SysGen):

  5. Result:

  6. DSP C programming – not as simple as it seems • Even though the DSP is programmed in C, a lot of rules are different • fopen, fread, and fwrite functions do not seem to work • Figuring out file I/O in the DSP board is the next great challenge

  7. Status of Project Parts • FPGA is close to running filtering algorithm • Ran basic program on vertex 4 early in the week • Need to get Spartan board talking to lab computer • File I/O and data buffering are working in Matlab and Simulink • C program has Binary file I/O (Linux) • DSP is a little ways off • Lots of research needs to be done on programming for the DSP • C programming advances on computer are not directly applicable to advances for the DSP

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