'Cordless voice module' for wireless phone applications
11 August 2004Telecoms, Datacoms, Wireless, IoT
Healthcare (Industry)
National Semiconductor offers a cordless voice module (CVM) that integrates a radio transceiver and baseband with a complete protocol stack on a single board. This enables system designers to more easily and cost-effectively design a DECT or 2,4 GHz cordless phone or add this functionality to their products.
Because the CVM enables designers to easily integrate phone and data capabilities with a self-contained module, IDT International selected the CVM for use in its recently announced SMS628 cordless phone. The cordless phone allows 4-handset operation, multiparty conference, handset speakerphone, caller ID, short message service (SMS), broadcast message and personal assistance.
Two versions of the CVM are available. The SC14CVM2.4 uses National's SC14428 baseband controller, a CMOS chip optimised to handle all the audio, signal and data processing for a 2,4 GHz ISM digital band handset or basestation. The complete protocol stack and application interface are integrated in ROM code. RF for the SC14CVM2.4 is provided by the LMX4268, a radio transceiver IC optimised for the 2,4 GHz system. As a result, the module has a superior typical range of 350 m outside and 75 m indoors. The LMX4268 is a complete DCT radio transceiver compliant with the FCC standard.
The SC14CVM1.9 is optimised for the digital enhanced cordless telecommunications (DECT) standard. It is also equipped with the SC14428 baseband controller and with the LMX4168, a radio transceiver IC. The LMX4168 has the same specifications as the LMX4268, but is specially designed for the 1,9 GHz band and is compliant with the ETSI TBR06 standard.
For more information contact Simon Churches, Arrow Altech Distribution, 011 923 9600, [email protected]
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