This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TMS320F2812: EMU1 pin causes CPU to get into lock up mode.

Part Number: TMS320F2812

How we can identify if a processor is in boundary scan mode?  We have EMU0 and EMU1 pulled up with a 2.2k resistor.  TRST is pulled down with a 1k resistor.  Tapping the EMU1 pin to ground through a 1k resistor will "lockup" the processor.

According to the datasheet the EMU1 pin should only have any effect to the system in combination with a rising edge on the TRST input and EMU0 being pulled high. How can we identify in what mode the chip is in? The (PWM) peripheral is still operating with its last updated value when it is in the "lockup" state.

It appears there is not any documentation which explain the Boundary Scan Mode.

Thank you  for response,