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page 132,66,0,6opt rc.****************••••************************************I;Motorola Austin DSP Operation June 30, 1988.********************************************************I;DSP56000f1;20 - tap FI R filter;File name: 1-56.asm.*********************************************************************************************************************IMaximum sample rate: 379.6 kHz at 20.5 MHzf500.0 kHz at 27.0 MHzMemory Size: Prog: 4+6 words; Data: 2x20 wordsNumber <strong>of</strong> clock cycles: 54 (27 instruction cycles)Clock Frequency: 20.5 MHzf27.0 MHzInstruction cycle time: 97.6 nsf74.1 ns.*********************************************************************************************************************IThis FIR filter reads the input samplefrom the memory location Y:inputand writes the filtered output sampleto the memory location Y:outputThe samples are stored in the X memoryI The coefficients are stored in the Y memory**********************************************************************************************************************X MEMORYY MEMORYX(n)X(n-1)c(O)c(1)X(n-k+1) X(n+1)c(k-1)x(n)C(O)Gyen)81---~k-ly(n)Lc(p)x(n-p)p=O-FIRFigure 8-1 20-Tap FIR Filter Example (Sheet 1 <strong>of</strong> 2)

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