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UM1900 Datenblatt(PDF) 13 Page - STMicroelectronics

Teilenummer UM1900
Bauteilbeschribung  Getting started with the digital MEMS microphones expansion board based on MP34DT01-M for STM32 Nucleo
PDF  19 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
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UM1900 Datenblatt(HTML) 13 Page - STMicroelectronics

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UM1900
Hardware description
DocID027905 Rev 3
13/19
microphones to give the right clock. I²S and SPI read values from both the edges of the
merged PDM lines. For this use case you need the following SB configuration:
Table 6: Solder bridge configuration for 4 microphone acquisition
SB
Status
SB7
Close
SB8
Close
SB9
Open
SB10
Close
SB11
Close
SB12
Open
SB13
Close
SB14
Open
SB15
Close
SB16
Open
SB17
Open
SB18
Open
SB19
Open
SB20
Open
SB21
Open
In addition, J2 and J3 must be placed in position 2-3 for external microphone acquisition.
Other configurations are available, based on the MCU used.



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