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LM4930 Scheda tecnica(PDF) 7 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Il numero della parte LM4930
Spiegazioni elettronici  Audio Subsystem with Stereo Headphone & Mono Speaker Amplifiers
Download  35 Pages
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Produttore elettronici  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4930 Scheda tecnica(HTML) 7 Page - National Semiconductor (TI)

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System Control Registers (Continued)
GAIN CONFIG REGISTERS
This register is used to control the gain of the headphone amplifier, the loudspeaker amplifier, and the microphone preampli-
fier. The 7 bit address for the GAINCONFIG register is XX10010.
(X=0if ADDR is set to logic 0)
(X=1if ADDR is set
to logic 1)
GAINCONFIG (XX10010).
(Set = logic 1, Clear = logic 0)
BIT
15
14
13
12
11
10
987654321
0
RESET
0
0
0000000000000
0
Address
Register
Description
4:0
LOUDSPKR_GAIN
Programs the gain of the loudspeaker amplifier. Gain is set as follows:
4:0
Loudspeaker
Gain
4:0
Loudspeaker Gain
00000
-34.5dB
10000
-10.5dB
00001
-33dB
10001
-9dB
00010
-31.5dB
10010
-7.5dB
00011
-30dB
10011
-6dB
00100
-28.5dB
10100
-4.5dB
00101
-27dB
10101
-3dB
00110
-25.5dB
10110
-1.5dB
00111
-24dB
10111
0dB
01000
-22.5dB
11000
1.5dB
01001
-21dB
11001
3dB
01010
-19.5dB
11010
4.5dB
01011
-18dB
11011
6dB
01100
-16.5dB
11100
7.5dB
01101
-15dB
11101
9dB
01110
-13.5dB
11110
10.5dB
01111
-12dB
11111
12dB
9:5
HP_GAIN
Programs the gain of the headphone amplifier. Gain is set as follows:
9:5
Headphone Gain
9:5
Headphone Gain
00000
-46dB
10000
-22.5dB
00001
-45dB
10001
-21dB
00010
-43.5dB
10010
-19.5dB
00011
-42db
10011
-18dB
00100
-40.5dB
10100
-16.5dB
00101
-39dB
10101
-15dB
00110
-37.5dB
10110
-13.5dB
00111
-36dB
10111
-12dB
01000
-34.5dB
11000
-10.5dB
01001
-33dB
11001
-9dB
01010
-31.5dB
11010
-7.5dB
01011
-30dB
11011
-6dB
01100
-28.5dB
11100
-4.5dB
01101
-27dB
11101
-3dB
01110
-25.5dB
11110
-1.5dB
01111
-24dB
11111
0dB
13:10
MIC_GAIN
Programs the gain of the microphone amplifier. Gain is set as follows:
www.national.com
7


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