This invention discloses a high pressure media mill and processes for use thereof. The architecture compensates for performance asymmetry between ICs communicating over a bidirectional lane by instantiating relatively complex transmit and receive equalization circuitry on the higher-performance side of the lane. The decoder board determines the format of the frame of image data from information about which of the plurality of imaging modules provided the frame of image data or from information about the frame of image data, activates as necessary a command to prepare the decoder board to decode the frame of image data according to the format provided by the imaging module, and performs the decoding. This gives a more comfortable and effective skipping position. The drillings also have the effect of reducing instabilities and non-uniformity of the airflow around the shroud. Accurate timing is made possible through a number of techniques including precise initial calibration using a rising edgefalling edge averaging system, determining the sleep clock and reference clock frequencies, and the determination of the frequency drift of the sleep clock that occurred during the previous sleep interval.