AMBE-3000™ Vocoder Chip Users Manual
Version 2.8, August, 2011
Electrical Characteristics and
Requirements
3.8 Low Power Modes
The AMBE-3000™ Vocoder Chip has four power states as shown in Figure 11 AMBE-3000™ Vocoder Chip Power States.
Figure 11 AMBE-3000™ Vocoder Chip Power States
In order to reduce power consumption the AMBE-3000™ Vocoder Chip automatically switches to lower power states when
possible. The AMBE-3000™ Vocoder Chip may switch power states many times during each 20 ms frame. For instance,
during periods when the AMBE-3000™ Vocoder Chip is not actively executing code, the AMBE-3000™ Vocoder Chip will
be in a low power state. When a codec interrupt occurs the AMBE-3000™ Vocoder Chip will briefly switch into the run state
and then switch back to the lower power state. If the codec interface is in use, then the AMBE-3000™ Vocoder Chip will
never remain in the low power state for more than 125 us at a time.
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