I have used the UCD9222 and UCD7242 in a design like the TI Eval TMDSEVM6657.
During the verification of the power supplies, i have found the following:
The POR (Power On Reset) time for the UCD9222 is app. 16 mS. The time it takes from power applied to be ready to generate outputs ?
During that time the VID1A (input pin) is clamped to ground ? This only applies to VID1A not the other VID pins ?
I can't find anything on this behavior in the datasheets, somebody having same experience ?
Thanks in advance.
Best Regards
Mads