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by tschalch
Tue Aug 08, 2023 7:55 am
Forum: ESP-IDF
Topic: ESP32-S3: Sampling instant for I2S peripheral in PDM RX mode
Replies: 0
Views: 1289

ESP32-S3: Sampling instant for I2S peripheral in PDM RX mode

I observe a strange behavior when using the I2S peripheral of the ESP32-S3 in PDM RX mode using ESP-IDF version 4.4.3. Receiving data from two PDM microphones (Infineon IM69D130) works fine with a PDM clock frequency of around 1.4 MHz. I have configured one microphone to output its PDM signal on lef...