GF9101

The GF9101 is a high performance multirate digital filter which can be programmed to implement a wide range of signal processing functions using both symmetrical and asymmetrical filter structures. It is composed of a 12-tap FIR filter with internal RAM to hold up to 108 individual filters. An externally controlled address bus selects one of the 108 filters in each clock cycle. Pipelined architecture allows cascading of up to three devices with no additional hardware.

Two 10-bit input shift registers are provided for multiplexed filtering applications. The 12-bit coefficients can be programmed in serial, high speed parallel or microprocessor modes. In the high speed parallel mode,any one of the 108 filters can be reprogrammed in 18 clock cycles.