AT2008 Datasheet, PDF (12/19 Pages) List of Unclassifed Manufacturers – 8 Channels ADPCM Processor

AT2008
8 Channels ADPCM Processor
Sample Command Sequences:
ADPCM 32k, µ-Law, 8-half channels:
For convenience, each half duplex channel is assigned a number corresponding to the internal processing order of the channels. Channels
0 through Channel 3 correspond with ADPCM decode channels and Channels 4 through Channel 7 corresponds with ADPCM encode
channels.
The following is brief description of what each half duplex channel is running:
Channel 0: (decode ADPCM channel)
MCU7byte Command:
•
•
•
•
Channel 1: (decode ADPCM channel)
MCU7byte Command:
•
•
•
•
Channel 2: (decode ADPCM channel)
MCU7byte Command:
•
•
•
•
Channel 3: (decode ADPCM channel)
MCU7byte Command:
•
•
•
•
Channel 4: (encode ADPCM channel)
MCU7byte Command:
Decode (i.e. input is ADPCM sample sequence)
u-Law output, 32k ADPCM algorithm.
Input time slot: @yin[0:3] (beginning bit=0, ending bit=3)
Output time slot: @yout[0:7] (beginning bit=0, ending bit=7)
Decode
u-Law output, 32k ADPCM algorithm.
Input time slot: @yin[16:19]
Output time slot: @yout[16:23]
Decode
u-Law output, 32k ADPCM algorithm.
Input time slot: @yin[32:35]
Output time slot: @yout[32:39]
Decode
u-Law output, 32k ADPCM algorithm.
Input time slot: @yin[48:51]
Output time slot: @yout[48:55]
•
•
•
•
Channel 5: (encode ADPCM channel)
MCU7byte Command:
•
•
•
•
Channel 6: (encode ADPCM channel)
MCU7byte Command:
•
Encode (i.e. output is ADPCM sample sequence)
u-Law input, 32k ADPCM algorithm.
Input time slot: @xin[0:7]
Output time slot: @xout[0:3]
Encode (i.e. output is ADPCM sample sequence)
u-Law input, 32k ADPCM algorithm.
Input time slot: @xin[16:23]
Output time slot: @xout[16:19]
Encode (i.e. output is ADPCM sample sequence)
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©2001 Atelic Systems, Inc.