CMX882

CMX882, a full-function half-duplex audio and signalling processor IC for FRS and PMR446 type facilities suitable for both complex and simple end-designs. Under the control of the host C, all voiceban requirements are catered for: voiceband and sub-audio filtering, pre/de-emphasis, compression and expansion and audio routing and global level setting with single or two-point modulation in the transmit path.
CMX882 combination of new and standard signalling functions of this product offer, under software controlincreased functionality, versatility and privacy. Standard Extended-Code CTCSS and DCS functions areintegrated with the new XTCSS code implementation. XTCSS provides additional and improved squelchcentred privacy codes with the added advantage of 'silent operation'; no annoying interference from otsub-audio users. XTCSS fitted radios enjoy more privacy and flexibility of operation.
For advanced and enhanced radio operation, the CMX882 provides a 1200/2400 bps free-format an packet data FFSK/MSK modem for text messaging/paging, passing GPS location data (compatible with NMEA 0183) and other data applications.
With ultra low power requirements and graduated powersave, this product only requires a smaller, lower-power C than existing FRS/PMR446 solutions. CMX882 is available in compact SSOP and TSSOP packages.