MSM7581 Description
The MSM7581 is an ADPCM transcoder which is used by the new digital cordless system. It converts 64 kbps voice PCM serial data to 32 kbps ITU-T G.721 ADPCM serial data, and vice versa. This device is consists of four systems with full-duplex voice data channels and a data-through mode.
MSM7581 Key Features
- Conforms to ITU-T G.721
- Built-in Full-duplex Transcoder with Four Data Channels
- PCM panding Law: A-law/µ -law selectable
- Serial PCM Data Transmission Speed: 64 kbps to 2048 kbps
- Serial ADPCM Data Transmission Speed: 32 kbps to 2048 kbps
- Hardware Reset
- ITU-T G.721 Optional Reset
- for each channel
- Power Down Control for each channel
- Decoder (ADPCM Æ PCM ) Mute Mode and PAD Mode for each channel