Description
The MSM7718, developed for PHS (Personal Handyphone System) applications, is a CMOS LSI device and contains a line echo canceler and a single channel full-duplex ADPCM transcoder that performs interconversion between voice-band analog signal and 32 kbps ADPCM data.
Features
- Single 3 V power supply VDD : 2.7 V to 3.6 V.
- ADPCM : ITU-T Recommendations G.726 (32 kbps).
- Full-Duplex single channel operation.
- Transmit/receive synchronous mode.
- PCM interface coding format : µ -law.
- Built-in line echo canceler Echo attenuation : 30 dB (typ. ) Cancelable echo delay time : Normal speech mode : 23 ms (max. ) Line echo canceler expansion mode : 54 ms (max. ).
- Serial PCM/ADPCM transmission data rate : 64 kbps to 2048 k.
MSM7718-01 Datasheet
