2.12.10 sEEPromFRCcalib eepFRCcalib

The sEEPromFRCcalib eepFRCcalib variable contains the settings for the FRC calibration.

frcCalibGate

The frcCalibGate variable holds the duration of the measured gate (XTO depending). See FRC Calibration for a functional description.

Address

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

0x0098

frcCalibGate

data[7:0]

The data[7:0] variable holds the number of system clock (XTO/4) cycles that are required for 200 FRC cycles:
data=fXTO/4fFRC×200......(4)
This results in data = 191 for a standard crystal with 24.305 MHz and the target FRC frequency of 6.36 MHz. The default value for data[7:0] is, therefore, 0xBF.