Digital Signal Processors - DSP's
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Transcript of Digital Signal Processors - DSP's
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WELCOME
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Introduction to Digital Signal Processors
Hicham BERKOUKTarek Islam SADMI
E08/Computer EngineeringIGEE – Boumerdes.
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OUTLINE Overview Introduction to DS Processors Historical Development DSP Market Internal Architecture Applications of DSPs Examples Conclusion References
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Overview Introduction to DS Processors Historical development DSP Market Internal Architecture Examples Applications of DSPs Conclusion References
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Overview:
Digital signal processing techniques and algorithms developed throughout history are useless, unless implemented in a given hardware to perform specified tasks.
However, conventional microprocessors cannot handle those algorithms.
Hence, there’s a need to develop a new hardware : the Digital Signal Processor.
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Overview Introduction to DS Processors Historical Development DSP Market Internal Architecture Examples Applications of DSPs Conclusion References
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Introduction to DSProcessors:
From Wikipedia, the free encyclopedia:
A digital signal processor (DSP) is a specialized microprocessor with an architecture optimized for the operational needs of digital signal processing.
Typical DSP system :
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Conversion from Analog to Digital and Digital to Analog signals.
A lot of Interaction with outside world.
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What are the Differences between a DSP and a GP MPU
?
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Overview Introduction to DS Processors Historical Development DSP Market Internal Architecture Examples Applications of DSPs Conclusion References
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Historical Development:
First transistor: 16 December 1947, at the Bell Company by William Shockley.
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First IC: by Jack Killby 12 September 1958 at Texas instruments Laboratories.
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First Microprocessor: 15 November 1971 by Intel Company the Intel 4004.
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First DSP: 1978 : Texas Instruments TMS5100 DSP.
1978 : Intel and AMI, released to unsuccessful DSPs the 2920 and the S2811.1980 : the NEC µPD7720 DSP by PSTN Telecommunications.
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1983 : the TMS32010 by Texas instruments (Harvard architecture) (It already had a special instruction set, with instructions like load-and-accumulate or multiply-and-accumulate. It could work on 16-bit numbers and needed 390 ns for a multiply–add operation. TI is now the market leader in general-purpose DSP)
1988 : the appearance of the 2nd generation of DSPs, like AT&T DSP16A and the Motorola 56000 (accelerating tight-loops and loop addressing).
1995: the appearance of the 3rd generation of DSPs : new special instructions in the data path and hardware acceleration, using very complex problems like Fourier-Transform, or Matrix Operations like “ Motorola MC 68356. And TI TMS 320C541 and the TMS 320C80.
The fourth generation is best characterized by the changes in the instruction set and the instruction encoding/decoding.
The fastest digital signal processor (DSP) is the TMS320C6416, by Texas Instruments (USA). On 12 March 2003, a clock speed of 720 megahertz (MHz) was demonstrated at the Texas Instruments Laboratories, Stafford, Texas, USA.
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Overview Introduction to DS Processors Historical Development DSP Market Internal Architecture Example : TMS320C6400 DSP Applications of DSPs Conclusion References
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Market of DSP’s: The DSP market is very large and growing rapidly.
Incessant demand of cheaper and better electronic solutions,
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Overview Introduction to DS Processors Historical Development DSP Market Internal Architecture Examples Applications of DSPs Conclusion References
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Simplified Block Diagram of Typical DSP
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Harvard architecture. Direct Memory Access (DMA). Very Large Instruction Word (VLIW). Floating point or Fixed point arithmetic. Multiply and accumulate (MACs) Functions.
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Overview Introduction to DS Processors Historical Development DSP Market Internal Architecture Examples Applications of DSPs Conclusion References
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Applications of DSPs :
- Automation & Process Control (Barcode Scanner, Machine Vision)
- Automotive & Transportation (Active Noise Cancellation ANC)
- Communications & Telecom ( Miltary Radar/Sonar, Oscilloscopes)
- Consumer & Portable Electronics (MP3 Players, Mobile Phones, Guitar Effects)
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Health Tech (MRI: Magnetic Resonance Imaging, Ultrasound System)
Industrial (High-Speed Data Acquisition and Generation)
Security & Safety ( Fingerprint Biometrics, Camera Surveillance)
Space, Avionics & Defense (Military and Avionics Imaging)
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Overview Introduction to DS Processors Historical Development DSP Market Internal Architecture Examples Applications of DSPs Conclusion References
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Examples:
Music (Guitar Effects) :
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Overview Introduction to DS Processors Historical Development DSP Market Internal Architecture Examples Applications of DSPs Conclusion References
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Conclusion
DSP technology has enabled many applications.
Size of DSP market has attracted many competitors with a broad set of optimized solutions.
DSP’s are very fast and optimal for real time processing.
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Overview Introduction to DS Processors Historical Development DSP Market Internal Architecture Examples Applications of DSPs Conclusion References
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References :
TMS320C64x, Technical Overview The Scientist and Engineer's Guide to Digital Signal Processing, Chapter28 http://www.signalogic.com/index.pl?page=dsp_app http://en.wikipedia.org/wiki/Digital_signal_processor http://en.wikipedia.org/wiki/Bit_slicing http://en.wikipedia.org/wiki/Floating-point http://en.wikipedia.org/wiki/Texas_Instruments_TMS320C6400 http://www.vision-systems.com/articles/2003/03/texas-instruments-claims-
fastest-dsp.html http://www.ti.com/lsds/ti/dsp/applications.page