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Digital processing applications for DE2 card

Digital processing applications for DE2 card. 1 semester project. High Speed Digital Systems Lab Winter 2008/09. Instructor: Mony Orbach Students : Avner Reisz, Natty Nizri. Introduction. The MSS (mixed signal system) from Alex & Rony’s project, combines analog and digital signals.

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Digital processing applications for DE2 card

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  1. Digital processing applications for DE2 card 1 semester project High Speed Digital Systems Lab Winter 2008/09 Instructor: Mony Orbach Students : Avner Reisz, Natty Nizri

  2. Introduction The MSS (mixed signal system) from Alex & Rony’s project, combines analog and digital signals. With the help of Alterra’s DE2 analog signals can be digitally processed after being sampled by the MSS.

  3. Introduction This is the case handled:

  4. Topics • Project goal Inputs • Outputs Block diagram Rates & frequencies The applications Time table

  5. Project goal Writing the applications in VHDL for the DE2

  6. Inputs DE2 MSS 8-bit BUS (100 kHz) Function generator

  7. Outputs Scope DE2 8-bit BUS (100 kHz) MSS

  8. Block diagram MSS Function generator Scope DE2

  9. Rates & frequencies: MSS • Input: • ± 1v • BW: 20Hz – 20kHz • Output: • 2.5 ± 1.4v

  10. Rates & frequencies: DE2 • I/O: • 8 bit bus • 100kHz • Cyclone II • 50/27 MHz

  11. The Aplications: • Saturation: Cuts to the signal to a max value (of choice) whenever crossing it. 2. Time stretch: Stretches the signal in time (This is actually like freq. reduce)

  12. The Aplications: 3. DC: Applies a DC value of choise (e.g. Vrms or peak of the original signal). 4. Division: Divides the signal (letting the user choose the factor is an option..) 5. Filter. 12

  13. Time table

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