The equation CapLoad = (CL - CBRD - CCHIP)/0.09375, shown in the datasheet, provides a calculation of the internal digital tuning capacitance used to achieve zero PPM. In this equation:
CL: The crystal-specific internal load capacitance. This quantity can be found in the crystal datasheet.
CBRD: The series combination of the capacitance seen from Xin and Xout pins due to external caps and to the board trace caps.
CCHIP: Internal chip capacitance.
Upon entering the crystal load capacitance, CyberClocks automatically calculates the CapLoad value. Hence, the user does not need to worry about this.