MSM7540 - Single Rail ADPCM CODEC
MSM7540 Features
* Single 5 V Power Supply Operation
* ADPCM Algorithm : Complies completely with 1988's version ITU-T G.721 (32 kbps)
* Transmit/Receive Full-Duplex Operation
* Transmit/Receive Synchronous Mode Only
* Serial ADPCM Transmission Data Rate : 32 kbps to 2048 kbp