AMBE-1000 Digital Voice Systems, Inc., AMBE-1000 Datasheet - Page 43

• Manufacturer Part Number: AMBE-1000
• Manufacturer: Digital Voice Systems, Inc.

4.1.14.6
0x13EC
0x13EC
0x13EC
Header
Header
Header
The AMBE-1000 is not recommended for new designs.
0x04
0x04
0x06
ID
ID
ID
Please refer to the AMBE-2000/2020 product line.
Control_0 Control_1 Control_2 Control_3
Control_0 Control_1 Control_2 Control_3
Control_0 Control_1 Control_2 Control_3 Control_4
Framed Input : ID = 0x06 : Dual Tone Generation
When in either Standard or Deep Sleep mode the AMBE-100™ will not respond to A/D-
D/A interrupts. Deep Sleep mode shuts down the channel signaling as well (until a chip
reset is performed).
Table 4-S Command Frame for Standard Sleep Mode
0x00
Table 4-T Command Frame for Deep Sleep Mode
0x00
The AMBE-1000™ Vocoder Chip can also generate Dual Tones. This is done by sending
a Command Frame with ID=0x06 and setting the amplitude and tone data within the
frame to appropriate values for the desired DTMF tone. Calculate the amplitude of the
tones using the formula in Table 4-V (some examples are given) and insert the values
into Control_1 and Control_2. Then using Table 4-W determine the values for the
desired DTMF tone and insert them into Control_3 and Control_4. The remainder of
the Command Frame is filled out with 0x0000 values. For single tone generation use
the amplitude value of 0xD800, the equivalent of a 0 amplitude to turn off one of the
tones, and set up the other tone normally.
Generation of tones is done in 40 millisecond intervals. That is, each Command Frame
with ID=0x06 will produce a tone of 40 milliseconds. After inputting this Command
Frame the DPE signal will return high after 40 milliseconds as opposed to the normal 20
millisecond period.
Table 4-U DTMF Command Frame Format
0x00
Table 4-V Tone Amplitude with Examples
0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000
0x0001 0x0000 0x4000 0xD000 0xF000 0x0000 0x4000 0x2710 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000
Table
4-V
Amplitude
note 1 : reference point 32768 (maximum Linear Amplitude) = 3.17 dBm0
Linear
0.065
3370
5000
The AMBE-1000 is not recommended for new designs.
Table
4-V
Please refer to the AMBE-2000/2020 product line.
* Value = 2048 * log (base 2) [Linear Amplitude / 2]
Table
4-W
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Table
4-W
(decimal)
* Value
-10240
21952
23117
0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000
page 43
Control_1,
Control_2
0xD800
0x5A4D
0x55C0
Configuration Data
Configuration Data
All Zeros
-117.56 dBm0
-16.59 dBm0
-13.16 dBm0
(silence)
(note 1)
dBm0