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As well as being fast processors, DSP processors also have to cope with signals which have to be input and output in real time. Most DSP processors have high speed serial ports, which allow signal data to be input and output under DMA while processing continues uninterrupted in the foreground.
Click here to go to the Serial Port Timing Page
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Last updated: 1st January 1997
File http://www.bores.com/chips/serial.htm