MX93521中文資料????????????旺宏數(shù)據(jù)手冊PDF規(guī)格書

GENERAL DESCRIPTION

This document describes how to implement an all-digital voice recorder using the MX93521 chip. The MX93521 is a Digital Recorder Data Pump which is controlled by an external microprocessor to perform various recorder function.

The MX93521 is fully controlled by a HOST controller through a simple HOST interface protocol. The HOST could initiate many digital recording functions such as record, play, repeat, search, skip, insertion, message managing and self-diagnosis. Also, HOST could set MX93521 in VOCODER mode and use MX93521 as a speech compression/decompression data pump. The functions supported by MX93521 are listed as followed.

FEATURES

? Excellent sound quality by adopting 4800bps CELP

speech compression alogorithm.

? Silent Compression algorithm to further compress silence between speech.

? Flash Memory Management alogorithm to manage

down-graded Flash Memory to store compressed

speech data. With silent compression, one 4Mbit flash

memory could store up to 18 minutes speech.

? Support 4/8/16/32 Mbit Samsung Flash Memory or its compatible parts

? Support both parallel and serial microprocessor interface.

? Codec Interface circuit (support both TP3054 and MX93000)

? Host controllable LCD Module Interface

? Host writable message header (4 bytes) for identification or index purpose

? Powerful Editing Function

? Varieties of operating function including Rewind, Fast

Forward, Repeat and message editing etc.

? Voice activated recording

? Use Flash memory to store user data (data bank)

? Upload/Download speech message data from/toHOST

? VOCODER mode (VOice COmpressor/DEcompressoR)

? Direct CODEC Play Mode (Play PCM/u-Law data received from HOST)

? Play Voice Prompt from ROM/FLASH memory

? DTMF tone genarator