The recommended power-up sequence is to apply VCC first, followed by AVCC, and then the digital supplies (DVCC and OSCVCC). This ensures that the analog and digital circuits are powered up in the correct order.
To optimize the PCB layout, keep the analog and digital circuits separate, use a solid ground plane, and keep the signal traces short and direct. Also, place the decoupling capacitors close to the device pins and use a common mode filter to reduce noise.
The maximum clock frequency supported by the PCM1742KE/2K is 256 fs (fs = 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, or 192 kHz). However, the actual clock frequency may be limited by the specific application and system requirements.
To configure the PCM1742KE/2K for Master Clock Mode, set the MCLK pin to the desired clock frequency, and set the BCK pin to the desired bit clock frequency. Also, set the WS pin to the desired word select frequency, and configure the device for Master Mode by setting the MODE pin high.
The recommended termination for the digital output pins is a series resistor (e.g., 22 ohms) and a parallel capacitor (e.g., 10 pF) to reduce electromagnetic interference (EMI) and improve signal integrity.
PCM1742KE/2K datasheet
by Texas Instruments
