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STA321MPL1 датащи(PDF) 59 Page - STMicroelectronics

номер детали STA321MPL1
подробное описание детали  Scalable digital microphone processor
PDF  80 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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STA321MPL1 датащи(HTML) 59 Page - STMicroelectronics

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STA321MPL1
Configuration registers (0x77; 0x78; 0x79)
80
6.4
PSCorrect registers
An ADC is used to input ripple data to SDI78. The left channel (7) is used internally. No
audio data can therefore be used on these channels, although all channel mapping and
mixing from other inputs to channels 7 and 8 internally are still valid.
6.4.1
PSC1-2: ripple correction value (RCV) (0x51, 0x52)
This value is equivalent to the negative maximum ripple peak as a percentage of Vcc
(MPR), scaled by the inverse of the maximum ripple p-p as a percentage of the full-scale
analog input to the ADC. It is represented as a 1.11 signed fractional number.
6.4.2
PSC3: correction normalization value (CNV) (0x53)
This value is equivalent to 1/(1+MPR) expressed as a 0.12 unsigned fractional number.
D7
D6
D5
D4
D3
D2
D1
D0
RCV11
RCV10
RCV9
RCV8
RCV7
RCV6
RCV5
RCV4
00
000
00
0
D7
D6
D5
D4
D3
D2
D1
D0
RCV3
RCV2
RCV1
RCV0
CNV11
CNV10
CNV9
CNV8
00
001
11
1
D7
D6
D5
D4
D3
D2
D1
D0
CNV7
CNV6
CNV5
CNV4
CNV3
CNV2
CNV1
CNV0
11
111
11
1



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