參數(shù)資料
型號(hào): LM4931
廠商: National Semiconductor Corporation
英文描述: Audio Subsystem with Mono High Efficiency Loudspeaker and Stereo Headphone Amplifiers
中文描述: 與單聲道音頻子系統(tǒng)高效揚(yáng)聲器和立體聲耳機(jī)放大器
文件頁(yè)數(shù): 16/47頁(yè)
文件大?。?/td> 1640K
代理商: LM4931
Microphone Gain Registers
This register is used to control the gain of the microphone preamplifier.
DEFAULT CHART FOR MIC_GAIN (02h)
DATA BIT
DEFAULT
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
0
MIC_GAIN (02h) (SET = LOGIC 1, CLEAR = LOGIC 0)
Address
3:0
Register
MIC_GAIN
Description
Programs the gain of the microphone pre-amplifier. Gain is
set as follows:
3:0
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
If set the microphone pre-amplifier and the ADC output are
muted.
RESERVED (Note 14)
RESERVED (Note 14)
If set the HPF is disabled, this is useful for wider bandwidth
use of the ADC.
Mic Gain
6dB
8dB
10dB
12dB
14dB
16dB
18dB
20dB
22dB
24dB
26dB
28dB
30dB
32dB
34dB
36dB
4
MIC_MUTE
5
6
7
RSVD
RSVD
HPF_DISABLE
L
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