器件名称: DE6491
功能描述: CMX649 Wireless Voice Link Demonstration Kit User Manual
文件大小: 546.61KB 共17页
简 介:CML Microcircuits
COMMUNICATION SEMICONDUCTORS
UM6491/1 April 2004
DE6491
CMX649 Wireless Voice Link Demonstration Kit User Manual
Advance Information
Features
Full-Duplex Wireless Voice-Link Communication Demonstration using the CMX649 ADM Voice Codec Operates in the 863 – 865 MHz European Licence Free Band 20m Range - Line of Sight Privacy via CMX649 Digital Scrambler On/Off, Volume and RF Channel Pushbutton Controls Phone Quality Voice Transmission using Time Division Duplex (TDD) Airlink Protocol Selectable RF Power
1.
Brief Description
The DE6491 is a CMX649-based wireless voice link demonstration kit that demonstrates CMX649 ADM Codec IC operation in a low-power, cordless headset application. Operating as a short range RF device in the 863 – 865 MHz European licence-exempt band, this demonstration kit consists of two separate stand-alone PCBs each with the following sections: CMX649-based audio, RF transceiver and control. The basic design may be user adapted to other RF frequencies. Full-duplex voice operation at up to 20 metres range is provided via a single RF channel Time Division Duplex (TDD) link. With the supplied headsets a user can investigate two-way voice-audio transfer between units. Each PCB can be powered, standalone, from a choice of AAA batteries or a bench power supply. Intelligent power saving reduces supply current when not communicating. Each terminal draws between 17 – 25.5 mA when communicating or 850A, typical, when powersaved. Each o……
