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STA321MPL 数据表(PDF) 22 Page - STMicroelectronics

部件名 STA321MPL
功能描述  Scalable digital microphone processor
PDF  50 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STA321MPL 数据表(HTML) 22 Page - STMicroelectronics

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Registers
STA321MP
22/50
Doc ID 022647 Rev 1
Setting the DSPB bit bypasses the biquad function of the FFX core.
Application example:
●
External clock: XTI=11.2896 MHz
●
COS[1,0] = 10: CKOUT= 90.3168 MHz / 8 = 11.2896 MHz
●
External Dual Flip Flop PDM I/F = CKOUT/4 = 2.8224 MHz, also provided to the
microphones
●
MCS[2:0]= 011: XTI /Fs = 4
Bit
RW
RST
Name
Description
0
RW
0
DSPB
DSP bypass bit:
0: normal operation
1: bypass of biquad and bass/treble functions
COS[1,0]
CKOUT frequency
00
PLL output
01
PLL output / 4
10
PLL output / 8
11
PLL output / 16



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