Hi Carlos Mendoza,
Now, The setup up of sgtl5000 is complete. The I2S is configured as Slaver (SGTL5000 as slave) and audio data is recived from codec by using DMA channel . Asynchronous mode and I2S format meanwhile audio is configure to use 16-bit format and sampling frequency is 48kHz, mclk is 1.576MHz. It is mainly used to audio sampling, the route is LINK_L->ADC->I2S_OUT, now the i2s_out pin generate a signal to MCU , although i have not input audio simple, I am very confused now, this is normal or not?
Hope for your help.