DS2167 Overview
The DS2167 and DS2168 are dedicated digital signal processor (DSP) CMOS chips optimized for Adaptive Differential Pulse Code Modulation (ADPCM) based pression algorithms. The devices halve the transmission bandwidth of “toll quality” voice from 64K to 32K bits/second and are utilized in PCM-based telephony networks. 022698 1/15 DS2167/DS2168 PRODUCT OVERVIEW The DS2167 and DS2168 contain three major functional...
DS2167 Key Features
- Speech pression chip patible with standard
- DS2167 supports “new” T1Y1 remendations (July 1986) and “new” CCITT G.721 remendations
- DS2168 supports “old” CCITT G.721 remendations
- Dual independent channel architecture
- device may
- Interconnects directly with µ-law or A-law codec/filter
- Serial PCM and control port interfaces minimize “glue
DS2167 Applications
- On-chip channel counters identify input and output timeslots in TDM-based systems