Datasheet

TLV320AIC3100
SLAS667A –NOVEMBER 2009–REVISED MAY 2012 www.ti.com
5.2.2 Audio Analog I/O
The TLV320AIC3100 has a stereo audio DAC and a monaural ADC. It supports a wide range of analog
interfaces to support different headsets and analog outputs. The TLV320AIC3100 has features to interface
output drivers (8-Ω, 16-Ω, 32-Ω) and a microphone PGA with AGC control. A special circuit has also been
included in the TLV320AIC3100 to insert a short key-click sound into the stereo audio output. The key-
click sound is used to provide feedback to the user when a particular button is pressed or item is selected.
The specific sound of the keyclick can be adjusted by varying several register bits that control its
frequency, duration, and amplitude. See Key-Click Functionality With Digital Sine-Wave Generator,
Section 5.5.7.
5.3 Digital Processing Low-Power Modes
The TLV320AIC3100 device can be tuned to minimize power dissipation, to maximize performance, or to
an operating point between the two extremes to best fit the application. The choice of processing blocks,
PRB_P1 to PRB_P25 for stereo playback and PRB_R4 to PRB_R18 for mono recording, also influences
the power consumption. In fact, the numerous processing blocks have been implemented to offer a choice
among configurations having a different balance of power optimization and signal-processing capabilities.
22 APPLICATION INFORMATION Copyright © 2009–2012, Texas Instruments Incorporated
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