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CMX882 View Datasheet(PDF) - CML Microsystems Plc

Part Name
Description
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CMX882
CML
CML Microsystems Plc CML
CMX882 Datasheet PDF : 70 Pages
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FRS Signalling Processor
CMX882
1.1 Brief Description
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 µC, all voiceband
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.
The combination of new and standard signalling functions of this product offer, under software control,
increased functionality, versatility and privacy. Standard Extended-Code CTCSS and DCS functions are
integrated with the new XTCSS code implementation. XTCSS provides additional and improved squelch-
centred privacy codes with the added advantage of ‘silent operation’; no annoying interference from other
sub-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 and
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 µC than existing FRS/PMR446 solutions. It is available in compact SSOP and TSSOP packages.
2004 CML Microsystems Plc
2
D/882/7
 

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