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MT9125 - Dual ADPCM Transcoder

General Description

The Dual-channel ADPCM transcoder is a low power, CMOS device capable of two encoder functions and two decoder functions.

Two 64 kbit/s PCM channels are compressed into two 32 kbit/s ADPCM channels, and two 32 kbit/s ADPCM channels are expanded into two 64 kbit/s PCM channels.

Key Features

  • Dual channel full duplex transcoder.
  • 32 kbit/s and 24 kbit/s ADPCM coding,.
  • compatible to G.721 & and G.723 (1988) and ANSI T1.303-1989.
  • Low power operation, total 25mW typical.
  • Asynchronous 4.096 MHz master clock operation.
  • Transparent ADPCM bypass capability.
  • Serial interface for both PCM and ADPCM data streams.
  • ST-BUS interface supported.
  • Pin selected µ-law or A-law operation.
  • Pin selected CCITT or sign.

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Datasheet Details

Part number MT9125
Manufacturer MITEL
File Size 239.38 KB
Description Dual ADPCM Transcoder
Datasheet download datasheet MT9125 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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CMOS MT9125 ® Dual ADPCM Transcoder Preliminary Information Features • Dual channel full duplex transcoder • 32 kbit/s and 24 kbit/s ADPCM coding, • compatible to G.721 & and G.723 (1988) and ANSI T1.303-1989 • Low power operation, total 25mW typical • Asynchronous 4.096 MHz master clock operation • Transparent ADPCM bypass capability • Serial interface for both PCM and ADPCM data streams • ST-BUS interface supported • Pin selected µ-law or A-law operation • Pin selected CCITT or sign-magnitude PCM coding • Single 5 volt power supply • Optional reset value (CCITT Table 3/G.