AMBE2000 Datasheet, PDF (20/47 Pages) List of Unclassifed Manufacturers – VOCODER CHIP

AMBE-2000™ Vocoder Chip
User’s Manual Version 3.0
Table 4-A Channel Interface Selection Table
Interface
Select Pins
Port Type
Active Formatted
0
0
Active
Unformatted
Passive
Formatted
Passive
Unformatted
0
1
1
0
1
1
Table 4-B Unformatted Bit per Word Selection Table
Number
of Voice
Data
Bits per
Word
Interface
Select Pins
1
0
0
2
0
1
3
1
0
4
1
1
All transfers occur through a serial port. The serial port inputs and outputs a 16 bit word for every write and read strobe signal
respectively. Serial mode can be formatted or unformatted. Within the unformatted mode, the data is input and output in
16 bits words still but with only 1 to 4 voice data bits carried within each word. These four configurations can be seen in Table
4-B. See section 4.3 for all the details on the serial interface.
page 20
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