This IP is an FIR filter IP Core with symmetrical coefficients and an even or odd number of filter taps. The architecture exploits the symmetry of the coefficients using half the number of multipliers compared to a normal FIR implementation. The result is a filter with a reduced area footprint while still maintaining the capacity for high sample rates.
High-speed filter applications where resources are limited
General purpose FIR filters with symmetrical coefficients
This IP is a second order IIR filter sometimes referred to as a 'bi-quad'. Internally, it has a fully pipelined architecture permitting the highest possible sample rates for IIR filtering.
Values are sampled on the rising clock-edge of clk when EN is high. The latency of the IIR filter between the first input sample and the first output sample is 7 clock cycles.
IIR filtering in higher sample-rate applications
General purpose high-pass, band-pass and low-pass filters