The recommended power-up sequence is to apply VCC first, followed by AVCC, and then DVCC. This ensures that the internal voltage regulators are powered up correctly.
To configure the PCM4222 for master mode operation, set the M/S pin high and ensure that the BCK pin is driven by the PCM4222. The device will then generate the clock signals for the audio interface.
The PCM4222 supports clock frequencies up to 50 MHz. However, the maximum clock frequency may be limited by the specific application and the quality of the clock signal.
To handle clock domain crossing in the PCM4222, use the internal clock domain crossing circuitry or implement a synchronizer circuit using flip-flops to synchronize the clock signals.
To minimize noise and ensure reliable operation, keep the analog and digital signal traces separate, use a solid ground plane, and avoid running digital signals near the analog signal traces.
PCM4222PFBR datasheet
by Texas Instruments
