MX439 - MSK Modem
The MX439 is a single-chip CMOS LSI circuit which operates as a 1200 baud MSK modem.
The mark and space frequencies are 1200Hz and 1800Hz phase continuous, and the frequency transitions occur at the zero crossing point.
The transmitter and receiver will work independently, thus providing full-duplex
MX439 Features
* 1200 Baud MSK Modem
* Meets Cellular & Trunked Radio Specifications
* Full-Duplex 1200 Baud
* On-Chip RX and TX Bandpass Filters
* Clock Recovery and Carrier Detect
* Pin Selectable Xtal/Clock Frequencies Document #2048-0041.005 June 1995 Applicatio
