The AV9110 generates user specified clock frequencies usingan externally generated input reference, such as 14.318 MHzor 10.00 MHz crystal connected between pins 1 and 14.Alternately, a TTL input reference clock signal can be used.The output frequency is determined by a 24-bit digital wordentered through the serial port. The serial port enables the user to change the output frequency on-the-fly. The clock outputs utilize CMOS level output buffers that operate up to 130 MHz.