MX93521中文資料ALL DIGITAL VOICE RECORDER MACHINE BASED ON THE MX93521 VOCODER CHIP數(shù)據(jù)手冊(cè)MXIC規(guī)格書(shū)

描述 Description

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

特性 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