MC145532 Datasheet (Motorola)

MC145532, ADPCM Transcoder

An Adaptive Differential PCM (ADPCM) transcoder is used to reduce the data rate required to transmit a PCM encoded voice signal while maintaining the voice fidelity and intelligibility of the PCM signal.

The transcoder is used on 64 kbps data streams which represent either voice or voice band data s

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MC145532/D ADPCM Transcoder MC145532 16 1 Conforms to G.721 1988 and T1.301 1987 The MC145532 Adaptive Differential Pulse Code Modulation (ADPCM) Transcoder provides a low cost, full duplex, single channel transcoder to (from) a 64 kbps PCM channel from (to) either a 16 kbps, 24 kbps, 32 kbps, or 64 kbps channel.

MC145532 Features

* independent of the mode of any previous enables. A transition from short frame to long frame mode or vice versa will cause at least one frame of data to be destroyed. Each of the four sets of I/O pins determines its mode independent of the other sets. Thus the encoder input could be