CML音頻擾頻器芯片 CMX138AE1

CML音頻擾頻器芯片 CMX138AE1屬性

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CML音頻擾頻器芯片 CMX138AE1描述

CMX138A：:Audio Scrambler and Sub-audio Signalling Processor
The CMX138A is a half-duplex audio scrambler and sub-audio signalling processor for analogue two-way radio applications. This makes it a suitable device for the leisure radio markets (FRS, MURS, PMR446 and GMRS).This device provides a user programmable frequency inversion audio scrambler with compander and pre/de-emphasis - performing simultaneous processing of sub-audio and in-band signalling.Other features include: an auxiliary ADC channel and an auxiliary DAC interface (with optional RAMDAC) to facilitate transmitter power ramping.The device has flexible powersaving modes and is available in a 28-pin (E1) TSSOP package

Features:
Programmable Audio Scrambler
Full Audio-band Processing: - Pre and De Emphasis - Compander - Scrambler - Selectable 2.55 and 3.0 kHz Filters
Auxiliary ADC and DAC
C-BUS Serial Control/Data Interface to Host μController
Two x Analogue Inputs (Mic. and Discriminator)
Selectable Audio Processing Order
CTCSS and DCS Sub-Audio Signalling
Programmable In-band Tone Encoder and Decoder
Auxiliary System Clock Output
Single-point Modulation Tx Output
Flexible Powersave Modes

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