Consumer Microcircuits Limited CMX148
The CMX148 is a half-duplex, audio, signalling and data processing IC for use in PMR systems that utilise the host µC to perform signalling, including CTCSS/DCS encoding/decoding. The device is intended for use in general leisure and professional PMR terminals. The CMX148 features an FFSK/MSK data modem for packetised or free-format data operations.| Part No. | CMX148 |
|---|---|
| Datasheet | CMX148 Download |
| Manufacturer |  Consumer Microcircuits Limited |
| Description | PMR Audio and Data Processor |
| Buy | Stock & Price |
FEATURES
● Concurrent Audio/Signalling/Data Operations● Complete Audio-band Processing: o Selectable Audio Processing Order o Pre and De-emphasis o Selectable 2.55/3.0 kHz Filtering o Selectable Audio HPF Cut-off o Compandor o Limiter
● Programmable Voice Scrambler
● MSK/FFSK Data Modem with Packet or Freeformat Modes with FEC, CRC, Interleaving and Scrambling
● DTMF and Audio Tone Encoder/Decoder
● Routing to Support Host µController Signalling
● Dual Auxiliary ADC, 4 Multiplexed Inputs
● 4 x Auxiliary DACs
● Dual Programmable System Clock Outputs
● Tx Outputs for Single, Two-Point or I/Q Modulation
● Microphone and Discriminator Analogue Inputs
● Digital Gain Adjustment
● Default 3.6864MHz Xtal/Clock
● C-BUS Serial Interface to Host µController
● Flexible Powersave Modes
● Low-power 3.3V Operation
● Sub-Audio Signalling Filters for CTCSS and DCS
● Small VQFN and LQFP Packages Audio Out Mic Input Auxiliary Multiplexed ADC Inputs Filtered Signal for Host Decoding Auxiliary DACs Host G...
