We are referencing to xCORE-200-Multichannel-Audio-Platform. We need only I2S output to ESS DAC, which uses BCLK input to regenerate it's own MCLK and has dedicated 100MHz low jitter oscillator. Question is; does XCORE neccesery need MCLK clock MCLK_XCORE as in schematic on page 23, CORE-200-Multich...

Hi! Thank you for the answer.
Our ESS DAC uses dedicated 100MHz clock. We don't need MCLK at all.

Is it possible to create USB interface for the ESS DAC without PLL, using only 24MHz oscillator for the main processor clock?
The ESS DAC uses BCLK input to regenerate it's own MCLK, so it does not need external MCLK?