C54x INT2 signal level

 Is there any other component on the line that brings the voltage down?

Regards.

Steve,

The INT2 pin is not connected to any other component!

Thank you for confirming. The IOH limit is 8mA for VC5092A, it should be able to drive one input pin. What is your DVDD?

My recommended debug steps are:

1) Execute without meaurement probe to confirm the measurement probe is not lowering the voltage;

2) Read INT2 value in IFR to confirm a logic high is registered;

3) Repeat step 2 with an external 3V driving INT2.

Hope this help.

Regards.

Thank you stave,

my DVDD is 3.3Volts.

meanwhile, I'll do what you have recommended.

Thanks. Minimum VOH for 3.3V is 2.4V.

Steve,

1/ after test/debug, I realized that my DSP is not able to detect an interrupt flag on INT2, however it does it well with the others (INT0, INT1 etc)

 2/ when I connect INT2 pin to VDD through a pull up resistor (1K, 10K and more) >> the INT2 signal is sticked at low level (around 0Volts). not normal ?

3/ when I connect INT2 directly to 3.3Volts, the power consumption is rised (with high courrent more than 200mA@3.3Volts!!!) my DSP still works (I'm lucky :o). 

I don't know what happenned to my INT2 ?

PS: I have others boards and the INT2 works well

Great that you have other boards that work which confirms the chip and your design work fine.

BTW,  I think the bad board has a short to ground.

Good luck.

Regards.