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DE6491 Datasheet

  • DE6491

  • CMX649 Wireless Voice Link Demonstration Kit User Manual

  • 548.57KB

  • 17頁(yè)

  • CMLMICRO

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CML Microcircuits
COMMUNICATION SEMICONDUCTORS
UM6491/1 April 2004
DE6491
CMX649 Wireless Voice Link
Demonstration Kit
User Manual
Advance Information
Features
鈥?/div>
Full-Duplex Wireless Voice-Link
Communication Demonstration
using the CMX649 ADM Voice
Codec
Operates in the 863 鈥?865 MHz
European Licence Free Band
20m Range - Line of Sight
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
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
鈥?/div>
鈥?/div>
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 鈥?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 鈥?25.5 mA when communicating or 850碌A(chǔ), typical, when powersaved.
Each on-board 碌Controller's FLASH memory comes programmed with the latest version of operating
firmware. If desired, a user may reprogram and in-circuit debug the 碌Controller themselves, using a
proprietary programmer (not included).
錚?/div>
2004 CML Microsystems Plc

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  • 英文版
    CMX649 Wireless Voice Link Demonstration Kit User Manual
    CMLMICRO
  • 英文版
    CMX649 Wireless Voice Link Demonstration Kit User Manual
    CMLMICRO [...

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