1.2 Recalibration

Recalibration is the process of performing calibration again and this can happen in following scenarios:

  1. When the Enable Auto Reset on PLL loss of lock in the PLL Options tab is selected and the lock signal goes low, then the recalibration process gets triggered.
  2. Reset is applied using PLL_RST_N.
  3. If both the CCCs are used and if the power-down signal (CCC_0_POWERDOWN_N or CCC_1_POWERDOWN_N) goes low, then recalibration gets triggered for the corresponding CCC.
  4. If READY_VDDPLL goes low, then the calibration process gets triggered—in this case, both the CCCs are calibrated.
During the recalibration process, the lock signals of the CCC that is CCC_0_LOCK and CCC_1_LOCK goes low if both CCC’s are getting recalibrated. Otherwise, the corresponding CCC lock goes down and CCC_<id>_LOCK becomes low.