SI5347-46 Datasheet, PDF (5/13 Pages) Silicon Laboratories – Data Sheet Errata for Product Revision B

3. VCO Drifts to Unknown Frequency
Data Sheet Errata for Product Revision B
VCO Drifts to Unknown Frequency
Description
VCO drifts to unknown frequency when holdover is disabled and there are no valid input clocks.
Impacts
VCO drifts to unknown frequency causing output clocks to operate at indeterminate frequencies.
Workaround
Ensure the HOLD_EN_PLLA, HOLD_EN_PLLB, HOLD_EN_PLLC and HOLD_EN_PLLD bits are always set. Holdover has been ena-
bled automatically since CBPro v1.0.
Resolution
This erratum has been addressed with ClockBuilder Pro, beginning with v1.0.
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