Patent ID: 7120656

Claim:
An FIR filter apparatus comprising: a coefficient generator to generate first and second coefficients; a first control conductor; a second control conductor; a controller coupled to a first end of said first control conductor and a first end of said second control conductor; a shared wiring, a first end of the shared wiring being coupled to said coefficient generator; an input; a first memory coupled to a second end of said shared wiring and coupled to a second end of said first control conductor to store the first coefficient in response to said controller; a first multiplier responsive to the first coefficient stored in said first memory and said input; a first delay circuit responsive to said input; a second memory coupled to the second end of said shared wiring and coupled to a second end of said second control conductor to store the second coefficient in response to said controller; and a second multiplier responsive to the second coefficient stored in said second memory and said first delay circuit.