Multi-rate finite impulse response filter

A transmitter system comprising:

• a bit stuffer having:
• a bit stream input;
• a rate select input;
• and
• a bit stream output comprising a stream of output bits generated by sequentially repeating each input bit of the bit stream input N times to bit-stuff the bit stream output according to the rate select input when the rate select input comprises a rate select signal that indicates a selected rate of 1/N times a full data rate, wherein N is 1, 2, 4, or 8;
• and
• a tap generator having:
• a bit-stuffed stream input coupled with the bit stream output;
• and
• a tap output comprising, at each full-rate clock unit interval (T), a pre-cursor bit, a cursor bit, and a post-cursor bit, generated from the bit-stuffed stream input and each spaced apart by one T.

A system for finite impulse response (FIR) output generation, the system comprising:

• means for bit-stuffing a stream of input bits to generate a stream of output bits according to a selected data rate;
• and
• means for generating a tap output from the stream of output bits at each full-rate clock unit interval (T) to comprise a pre-cursor bit, a cursor bit, and a post-cursor bit, each spaced apart by one T,
• wherein the means for bit-stuffing comprises:
• means for receiving a stream of input bits;
• means for receiving a rate select signal that indicates a selected rate of 1/N times a full data rate, wherein N is 1, 2, 4, or 8;
• and
• means for sequentially repeating each input bit N times to generate a stream of output bits bit-stuffed according to the selected rate.