AM62x-Low Power SK EVM uses TI‘s Low-Power TLV320AIC3106 Stereo Audio Codec to interface with AM62x via McASP. TLV320AIC3106 is a low-power stereo audio codec with stereo headphone amplifier, as well as multiple inputs and outputs programmable in single ended or fully differential configurations. The record path of the TLV320AIC3106 contains integrated microphone bias, digitally controlled stereo microphone preamplifier and Automatic gain control (AGC) with mix/Mux capability among the multiple analog inputs. The stereo audio DAC supports sampling rates from 8 kHz to 96 kHz. 1x Standard 3.5mm TRRS Audio Jack connector Mfr. Part# SJ-43514 shall be provided for MIC and Headphone output. Audio Codec’s Line inputs are terminated to Test points. SELECT pin shall be held LOW to select I2C as control interface. Codec can be configured over I2C interface, where I2C address can be set by driving pins MFP0 and MFP1 pin either high or low. Both these pins are set to high, so the Device address is set to 0x1B. Unused inputs and outputs of the Audio Codec are connected to ground. The Controller Clock input, MCLK to the Audio Codec is provided through a 12.288MHz Oscillator. Audio serial data bus bit clock BCLK of the codec is driven by the AM62x SoC through a buffer. Audio serial data bus input and output DIN, DOUT are connected to SoC’s MCASP1_AXR0 and MCASP1_AXR2 through buffers. An AND output of RESETSTATz and a GPIO sourced via IO expander are used to reset the Audio codec. The TLV320AIC3106 is powered by an analog supply of 3.3 V, a digital core supply of 1.8 V, and a digital I/O supply 3.3 V.