Hi,
I have big problem with my project.
At random intervals my F28335 have issues with JTAG programming. I have SC_ERR_PATH_BROKEN error and only replacing chip fixes this, so I'm assuming that I have damaged some I/O from JTAG. Sometimes my chip last for few hours, but sometimes for example 10 days. I don't known what is happen. For example - yesterday is working all fine. I've disconnected all cables, turn off all my power. Today I'm turning on power and... JTAG not working with stuck-at-zero or stuck-at-ones error so it again broken my JTAG I/O ??
XCLKOUT is fine and power also. Also I've checked power up sequence - all is OK. Power is on TPS62404DRC-Q1.
Programmer I use is Olimex TMS320-XDS100v3+ rev. C.
I've attached schematics of JTAG signals.