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LM4931ITL/NOPB Datasheet(PDF) 14 Page - Texas Instruments

Part # LM4931ITL/NOPB
Description  LM4931 Boomer™ Audio Power Amplifier Series Audio Subsystem with Mono High Efficiency Loudspeaker and Stereo Headphone Amplifiers
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LM4931ITL/NOPB Datasheet(HTML) 14 Page - Texas Instruments

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LM4931
SNAS251E – APRIL 2004 – REVISED MAY 2013
www.ti.com
Table 7. MIC_GAIN (02h) (SET = LOGIC 1, CLEAR = LOGIC 0)
Address
Register
Description
3:0
MIC_GAIN
Programs the gain of the microphone pre-amplifier. Gain is set as
follows:
3:0
Mic Gain
0000
6dB
0001
8dB
0010
10dB
0011
12dB
0100
14dB
0101
16dB
0110
18dB
0111
20dB
1000
22dB
1001
24dB
1010
26dB
1011
28dB
1100
30dB
1101
32dB
1110
34dB
1111
36dB
4
MIC_MUTE
If set the microphone pre-amplifier and the ADC output are muted.
5
RSVD
RESERVED(1)
6
RSVD
RESERVED(1)
7
HPF_DISABLE
If set the HPF is disabled, this is useful for wider bandwidth use of
the ADC.
(1)
Reserved bits should be set to zero when programming the associated register.
Headphone Gain Registers
This register is used to control the gain of the headphone amplifier.
Table 8. DEFAULT CHART FOR HP_GAIN (03h)
DATA BIT
7
6
5
4
3
2
1
0
DEFAULT
0
0
0
0
0
0
0
0
14
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Copyright © 2004–2013, Texas Instruments Incorporated
Product Folder Links: LM4931



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