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STEVAL-MKI138V1 データシート(PDF) 1 Page - STMicroelectronics |
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STEVAL-MKI138V1 データシート(HTML) 1 Page - STMicroelectronics |
1 / 4 page June 2013 DocID024359 Rev 2 1/4 4 STEVAL-MKI138V1 STAudioHub USB interface board based on MP34DT01 and STM32 Data brief Features • Powered and connected to PC through USB • Sound card automatically recognized by the PC as an audio device. • MEMS microphones provide a high frequency data stream (1 to 3.25 MHz) of 1 bit digital samples (PDM technique) • Audio collected from the microphones is sent to the PC through USB • LED status indicator • RoHS compliant Description The purpose of STEVAL-MKI138V1 is to provide a demonstration of decoding and streaming of digital MEMS microphone outputs. The STEVAL-MKI138V1 demonstration board hosts the MP34DT01 (top-port digital microphone), working as a sensor and the STM32F107RC microcontroller, which functions as an audio decoder. These microphones are analog-to-digital transducers. They are capable of sensing sound pressure and converting it to a digital signal using the PDM technique. The STM32 microcontroller decodes the PDM signals from the microphones and streams the audio via USB. The STEVAL-MKI138V1 is a sound card automatically recognized by the PC as an audio device. Connection is made through a USB cable, which both powers the board and streams the audio collected from the microphones to the PC. It is also possible to use the STEVAL-MKI138V1 as an interface board for other microphone boards (STEVAL-MKI126Vx), in which case use of the APWorkbench software tool is recommended. Top view Bottom view www.st.com |
同様の部品番号 - STEVAL-MKI138V1 |
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同様の説明 - STEVAL-MKI138V1 |
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