ADAU1787 digital mems microphone - no I2S clock
I have two questions about the ADAU1787 dev kit:
I am connecting digital MEMS microphones to use as the ANC mics. It is the Infineon IM73D122V01.
Unfortunately the Dmic input is not working. I cannot get a clock out of the chip. The clock line is always low (measured on an oscilloscope).
This is my connections to the microphone. Attached is the SigmaStudio project file.DIGITAL MIC_Updated (3).dspproj
Do you know how to change the I2S frequency in Sigma Studio?
software
ADAU1787
digital microphone
sigma studio 4.7
Integrated/Special Purpose A/D Converters
ADAU1787 evaluation board
Audio CODECs
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Hello Ak1111,
I will get an answer back to you soon. Meanwhile, you also asked about changing the I2S frequency? Do you really mean I2S or were you asking about the DMIC clock frequencies? All of your other questions are about the DMICs and not the serial ports.
You change the serial port frequencies on the SPI_CTRL tab.
Dave T
AK111,
This is a hardware bug on the EVB, using the J5 will allow access to DMIC_CLK's.
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