> > allows you to get a square, sawtooth, or sine wave output. When using the > square wave output, which is the msb of the phase accumulator, I can see a > lot of jitter in the output if the output frequency is not an integer you may want to take a look at Si570. Ling SM -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist