MX93521 Overview
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.
MX93521 Key Features
- Excellent sound quality by adopting 4800bps CELP speech pression alogorithm
- Silent pression algorithm to further press si lence between speech
- Flash Memory Management alogorithm to manage down-graded Flash Memory to store pressed speech data. With silent pression
- Support 4/8/16/32 Mbit Samsung Flash Memory or its patible parts
- Support both parallel and serial microprocessor inter face
- Codec Interface circuit (support both TP3054 and MX93000)
- Host controllable LCD Module Interface
- Host writable message header (4 bytes) for identifica -tion or index purpose
- Powerful Editing Function
- Varieties of operating function including Rewind, Fast Forward, Repeat and message editing etc