A high-quality, low-jitter clock source is recommended, such as a crystal oscillator or a clock generator IC. The clock source should be able to provide a stable clock signal with a frequency of 256x or 512x the desired audio sampling rate.
The PCM2901E can be configured for master mode or slave mode by setting the M/S pin high or low, respectively. In master mode, the PCM2901E generates the clock signal, while in slave mode, it receives the clock signal from an external source.
The maximum cable length for the I2S interface depends on the clock frequency and the signal quality. As a general rule, the cable length should be kept as short as possible (less than 10 inches) to minimize signal degradation and noise pickup. If a longer cable is required, it is recommended to use a shielded cable and to terminate the lines properly.
The PCM2901E can handle digital audio data format conversion between different sampling rates using its built-in asynchronous sample rate converter (ASRC). The ASRC can convert between different sampling rates, such as 44.1 kHz to 48 kHz, while maintaining the original audio data integrity.
The power consumption of the PCM2901E depends on the operating mode and the clock frequency. In typical operating conditions, the power consumption is around 100-150 mW. However, this can vary depending on the specific application and the clock frequency used.
PCM2901E datasheet
by Texas Instruments
