User guide

System Generator for DSP User Guide www.xilinx.com 29
UG640 (v 12.2) July 23, 2010
System-Level Modeling in System Generator
• Addressable Shift Register (ASR): used to implement the input delay buffer. The
address port runs n times faster than the data port, where n is the number of the filter
taps (5 for this example)
• Coefficient ROM: used to store the filter coefficients
• Counter: used to generate addresses for the ROM and ASR
• Comparator: used to generate the reset and enable signals
• MAC Engine: used as a Multiply-Accumulator operator for the filter