Digital Voice Systems AMBE-2000 - Page 38

AMBE-2000™ Vocoder Chip Users Manual
Version 4.92, June, 08
DVSI Confidential Proprietary, Subject to Change Page 38
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transferred into the decoder for each 20-millisecond frame will be the number of bits per frame divided by the number of bits
per word. So a system coding at 4800 bps with 3 bits per word will need to write exactly 32 ([4800 ÷50] ÷3 = 32) words each
frame.
Table 5-Q Unframed Serial Input Data Format
Data Control Offset Control Data
Bits per Word
See Table 4-A
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
1 bit per Word Format
D
msb
0 0 0 0 0 0 X X X X X X X X X
2 bits per Word Format
D
msb D
0 0 0 0 0 X X X X X X X X X
3 bits per Word Format
D
msb D D
0 0 0 0 X X X X X X X X X
4 bits per Word Format
D
msb D D D
0 0 0 X X X X X X X X X