Baseband Signal Processor

The MX829 is a low voltage CMOS integrated circuit, designed to provide baseband audio and system signal-processing functions required for LMR/PAMR/PMR trunked radio applications. The MX829 operates in half-duplex mode under the serial-bus control of a host µC.
The MX829 incorporates a dual-rate 1200/2400bps MSK modem, with a software-flexible choice of synchronization codewords, data run-length and CRC checking to suit a wide range of applications. These features allow very flexible handling of user defined data on traffic channels in addition to the network signaling sent on control channels. A 16 character DTMF encoder is available in the transmit mode. Software programmable output level-adjustment facilitates two-point modulation circuits.

FEATUREs
• Rx Audio Processing
• Tx Audio Processing
• 1200/2400 Baud Modem
• DTMF Encoder
• Low Voltage Operation
• “C-BUS” Compatible
• Host µC Interface

APPLICATIONs
• ETS/MPT/PAA Standards Compatible
• LMR/PAMR/PMR Trunked Systems
• Multi-standard Modem Formats