MSM7708-02 Overview
The MSM7708-02 is a CMOS IC developed for applying to PHS (Personal Handyphone System). This device provides a CODEC function which performs transcoding between the voice band analog signal and 32 kbps ADPCM data. It also provides a serial register interface function for telephone call recording.
MSM7708-02 Key Features
- Single 3 V power supply operation (VDD: 2.7 V to 3.6 V)
- Low power consumption When system is operating: 6 mA typ. When powered down: 0.02 mA typ. (ADPCM CODEC)
- ADPCM: ITU-T Remendations G.721 (32 kbps)
- Transmit/receive full duplex capability
- PCM interface code format: m-law or A-law selectable
- Serial ADPCM and PCM transmission rate: 64 kbps to 2,048 kbps
- Transmit/receive mute function; transmit/receive programmable gain setting
- Side tone generator (8-step level adjustment)
- Built-in DTMF tone, ringing tone, and various tone generators
- Built-in VOX function (Serial Register Interface)