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DS90UB914 VSYNC,HSYNC,DATA and PCLK no output

Mickey Zhang
Genius 12080 points

Hi Team,

The customer is using DS90UB913 and DS90UB914.  DS90UB913 can receive the signal of VSYNC,HSYNC,DATA and PCLK pins when the external crystal is connected to DS90UB913 . The external crystal is 48MHZ.

For DS90UB914, the customer uses BIST Self-Test, there is a 12MHZ output signal for the VSYNC pin,HSYNC pin and DATA pin and a 24MHZ  output signal for

PCLK pin.  But there are  not any output signals for VSYNC,HSYNC,DATA and PCLK pins in application,not in BIST Self-Test.

What is the reason? How to solve the issue?

Thanks,

Best Regards,