CMX469A FFSK Modems

CML Micro CMX469A FFSK Modems are CMOS LSI circuits that operate as full-duplex 1200, 2400, or 4800 baud FFSK (Fast Frequency Shift Keying) modems. A standard Xtal oscillator is employed with two clock frequencies (1.008MHz or 4.032MHz) to provide baud rate, transmit frequencies, and Rx and Tx synchronization. The CMX469A modems include circuitry for Carrier Detect and Rx Clock recovery, available as output pins. Rx, Tx, and Carrier Detect paths contain a bandpass filter to ensure optimum signal conditions.