1.
Write R0 with FCAL_EN = 1,then Write R0 with FCAL_EN = 0
There needs to be a delay between the two？
2.only Write R0 with FCAL_EN = 1?
only Write R0 with FCAL_EN = 0？
Write R0 with FCAL_EN = 1 ，then Write R0 with FCAL_EN = 0?
There needs to be a delay between the two？
Re-program register R0 with FCAL_EN = 1 to ensure that this happens with the LDOs at their proper bias leve
only Write R0 with FCAL_EN = 1?
only Write R0 with FCAL_EN = 0？
Write R0 with FCAL_EN = 1 ，then Write R0 with FCAL_EN = 0?
It should be write R0 with FCAL_EN = 0 and DBLR_CAL_EN = 0
FCAL_EN and DBLR_CAL_EN are the R0 register bit 4 and bit6. This step means that configure R0 register bit 4 and bit6 are both 0.
