With a BF524C, is it advisable to use the same 24MHz crystal for both USB_XTAL and CODEC_MCLK?
-Is the USB oscillator certain to be active at all times?
-Would any buffering be necessary or is it possible to simply connect USB_XTALIN to MCLK?
-According to the datasheet, "When using an external clock source to drive the CODEC_MCLK pin, care should be taken to select a clock source with less than 50 ps of jitter." How good is the USB oscillator in this respect?
-Are there any related issues with PCB routing?