参数资料
型号: TLV320AIC3111IRHBT
厂商: TEXAS INSTRUMENTS INC
元件分类: 音频/视频放大
英文描述: AUDIO AMPLIFIER, PQCC32
封装: 5 X 5 MM, GREEN, PLASTIC, QFN-32
文件页数: 109/156页
文件大小: 1701K
代理商: TLV320AIC3111IRHBT
s
g
s
m
1
3
Micbias
m
s
g
s
MICBIAS
HPR
HPL
VOL/MICDET
Micpga
SLAS644B – JULY 2009 – REVISED OCTOBER 2009
www.ti.com
5.6.4.6
Example Setup for DRC
PGA gain = 12 dB
Threshold = –24 dB
Hysteresis = 3 dB
Hold time = 0 ms
Attack rate = 1.9531e–4 dB per 1/DAC_fS
Decay rate = 2.4414e–5 dB per 1/DAC_fS
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 w 30 46 B6 #Go to Page 9 w 30 00 09 #DRC HPF w 30 0E 7F AB
80 55 7F 56 #DRC LPF W 30 14 00 11 00 11 7F DE
5.6.5
Headset Detection
The TLV320AIC3111 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
56
APPLICATION INFORMATION
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TLV320AIC3111
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