Datasheet

Micbias

MICBIAS

HPR

HPL

VOL/MICDET

Micpga

TLV320AIC3110

SLAS647B –DECEMBER 2009–REVISED MAY 2012

www.ti.com

Script

#Go to Page 0

w 30 00 00

#DAC => 12 db gain left

w 30 41 18

#DAC => 12 db gain right

w 30 42 18

#DAC => DRC Enabled for both channels, Threshold = -24 db, Hysteresis = 3 dB

w 30 44 7F

#DRC Hold = 0 ms, Rate of Changes of Gain = 0.5 dB/Fs'

w 30 45 00

#Attack Rate = 1.9531e-4 dB/Frame , DRC Decay Rate =2.4414e-5 dB/Frame

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#DRC HPF

w 30 0E 7F AB 80 55 7F 56

#DRC LPF W 30 14 00 11 00 11 7F DE

5.5.4.7 Headset Detection

The TLV320AIC3110 includes extensive capability to monitor a headphone, microphone, or headset jack,

to determine if a plug has been inserted into the jack, and then determine what type of

headset/headphone is wired to the plug. The device also includes the capability to detect a button press,

even, for example, when starting calls on mobile phones with headsets. Figure 5-34 shows the circuit

configuration to enable this feature.

Figure 5-34. Jack Connections for Headset Detection

This feature is enabled by programming page 0 / register 67, bit D1. In order to avoid false detections due

to mechanical vibrations in headset jacks or microphone buttons, a debounce function is provided for

glitch rejection. For the case of headset insertion, a debounce function with a range of 32 ms to 512 ms is

provided. This can be programmed via page 0 / register 67, bits D4–D2. For improved button-press

detection, the debounce function has a range of 8 ms to 32 ms by programming page 0 / register 67,

bits D1–D0.

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