CMX469A 1200/2400/4800 Baud FFSK/MSK Modem

CMX469A 1200/2400/4800 Baud FFSK/MSK Modem

The CMX469A is a single-chip CMOS LSI circuit which operates as a full-duplex 1200, 2400 or 4800 baud FFSK/MSK modem. The mark and space frequencies are 1200/1800, 1200/2400 and 2400/4800 Hz respectively. Tone frequencies are phase continuous; transitions occur at the zero crossing point. A common X.

Features

• Full-Duplex FFSK/MSK Modem with Separate Rx and Tx Enable Functions
• Pin Selectable Data Rates: 1200, 2400 or 4800 Baud
• Pin Selectable Xtal/Clock Inputs: 1.008MHz or 4.032MHz
• Clock Recovery Facility
• Carrier Detect Facility
• Low Power Operation (2.0mA typ. at 3.0V) Applications
• Data-Over Radio
• Personal/Cordless Telephone
• Radio and General Applications
• Narrowband Coax Data Channels
• Two Way Radio (MPT1327) Signalling
• Portable Data Terminals 1.1 Brief Description The CMX469A is a single-chip CMOS LSI circuit which operates as a full-duplex 1200, 2400 or 4800 baud FFSK/MSK m.