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I am connecting the AKU242 straight to our microprocessor. It is a PDM interface so it has a SELECT, DATA, CLOCK, VDD and 5 GND signals. On the datasheet, there are two identical PDM microphones with one SELECT connected ... (more)
What is the most energy efficient microphone input method, PCM via I2S or PDM. Does the SoC have a special HW handling of the PDM format for converting to PCM? Does the filtering of the 1 bit conversion compete with ... (more)
I'm starting a new design on nRF52 and I need to connect a microphone on it. Reading the datasheets and questions here, I found there's 3 solutions for the type of microphone and interface to nRF52 :
I am using a digital microphone using i2S interface with the following signals: BCLK (bit clock), WS (word strobe), SELECT (select for Left/Right) and SDOUT (digital data output).
On nRF52 there are five main signals for i2S including MCLK ... (more)
I'm looking to integrate a digital (PDM/I2S) MEMS microphone into my nRF51822-based design. I'd like some pointers to reference designs or other information -- the ones that seem relevant on the Nordic site (nRF6929) are locked :(
Has anyone ... (more)