MT9125
Features
- Dual channel full duplex transcoder
- 32 kbit/s and 24 kbit/s ADPCM coding,
- patible to G.721 & and G.723 (1988) and
ANSI T1.303-1989
- Low power operation, total 25m W 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.721) capability
Applications
- Pair gain
- Voice mail systems
- Wireless set base stations
ISSUE 3
Ordering Information
August 1993
MT9125AE MT9125AP
24 Pin Plastic DIP 28 Pin PLCC
-40 to +85°C
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 pressed into two 32 kbit/s ADPCM channels, and two 32 kbit/s ADPCM channels are expanded into two 64 kbit/s PCM...
