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UCD9090 Power down sequence implementation using GPI FAULT Enable signal

Narasimha reddy
Prodigy 90 points
Other Parts Discussed in Thread: UCD9090

Hi ,

Now, I want to implement a condition like "CPLD is driving a signal and based on this signal I have to implement  power down sequence".    

I tried with like

  • CPLD gpo signal  assigned to GPI of UCD9090 and after that GPI configure to  GPI  Fault ENABLE  
  • All Rails configuration I mentioned as a "GPI  seq off Dependencies"
  • All rails are configured set to CONTROL pin ONlY and also tried with auto Enable option.
  •  I captured the all rails with respect to CPLD signal. But, It was not depending  on CPLD signal"

Please guide me how to implement  power down sequence using CPLD signal as a GPI and this CPLD rail  also depended on sequence.