Posted on February 22, 2016 at 10:24I copied the CS43L22's schematic design from STM32F4-DISCOVERY. There is only 1 point different in my circuit (a mistake during design) that is VP, VL is 3.3V instead of 3V like STM32F4-DISCOVERY. As per the datasheet of CS43L22, 3.3V is in the working range.
my MCU is able to read\write the control registers on CS43L22 via I2C.
However, I almost don't receive any audio output form CS43L22.
I have measured the signals input of CS43L22 : MCLK, SCLK, SDIN,LRCL. And I see they are fine.
I have streamed my microphone data to USB to verify the audio signal and it is also fine.
anyone can help me to show this problem
Thank you!
