1. In order to solve the problem that the CSR Bluetooth module cannot be applied to the DAC module of 4-wire I2S, this module realizes the conversion of 3-wire I2S to 4-wire I2S (increasing the MCLK signal), and adopts the asynchronous input mode to synchronously up-convert the input signal, thereby reducing Bluetooth. The jitter output by the module I2S;
2. Applicable to: CSR64215, CSR8670, CSR8675 modules to PCM1794A, AK4495, AK4490, AK4497 and other four-wire DAC modules;
3. The power supply voltage is DC 5V.