ADPCM Transcoder
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.

• Complies with CCITT Recommendation G.721–1988
• Complies with the American National Standard (T1.301–1987)
• Full–Duplex, Single–Channel Operation
• Mu–Law or A–Law Coding is Pin Selectable
• Synchronous or Asynchronous Operation
• Easily Interfaces with Any Member of Motorola’s PCM Codec–Filter Mono–Circuit Family or Other Industry Standard Codec
• Serial PCM and ADPCM Data Transfer Rate from 64 kbps to 5.12 Mbps
• Power–Down Capability for Low Current Consumption
• The Reset State, an Option Specified in the Standards, is Automatically Initiated When the RESET Pin is Released
• Simple Time Slot Assignment Timing for Transcoder Applications
• Single 5 V Power Supply
• 16–Pin Package
• The MC145536EVK is the Evaluation Platform for the MC145532 and Also Includes the MC145480 5 V PCM Codec–Filter