參數(shù)資料
型號(hào): PCM1870RHFR
英文描述: 16-Bit Low-Power Stereo Audio ADC With Microphone Bias and Microphone Amplifier
中文描述: 16位低功耗立體聲音頻ADC,具有麥克風(fēng)偏置和麥克風(fēng)放大器
文件頁(yè)數(shù): 36/49頁(yè)
文件大?。?/td> 648K
代理商: PCM1870RHFR
www.ti.com
PCM1870
SLAS544–MAY 2007
Register 92
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
Register 92
0
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
LPAE
RSV
RSV
LGA4
LGA3
LGA2
LGA1
LGA0
IDX[6:0]:
101 1100b (5Ch) Register 92
LPAE: Automatic Attenuation Setting for Bass Boost Gain Control
Default value: 0
A gain setting for bass boost may cause digital data saturation, depending on the input data level. Where this
could occur, LPAE can be used to set the same attenuation level as the bass boost gain level for the digital
input data.
LPAE = 0
LPAE = 1
Disble (default)
Enable
LGA[4:0]: Bass Boost Gain Control
Default value: 0 0000
These bits are used to set bass boost gain level for the digital data. The center frequency for boost is 200 Hz at
44.1 kHz.
LGA[4:0]
0 0000
0 0011
0 0100
0 0101
0 0110
0 0111
0 1000
0 1001
0 1010
0 1011
0 1100
0 1101
0 1110
TONE CONTROL GAIN (BASS)
0 dB (default)
12 dB
11 dB
10 dB
9 dB
8 dB
7 dB
6 dB
5 dB
4 dB
3 dB
2 dB
1 dB
LGA[4:0]
0 1111
1 0000
1 0001
1 0010
1 0011
1 0100
1 0101
1 0110
1 0111
1 1000
1 1001
1 1010
1 1011
TONE CONTROL GAIN (BASS)
0 dB
–1 dB
–2 dB
–3 dB
–4 dB
–5 dB
–6 dB
–7 dB
–8 dB
–9 dB
–10 dB
–11 dB
–12 dB
36
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