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2 problems
1) JTAG is not stable, on STP there always showed invalid jtag connection or data transmitting error. sometimes the STP can work properly.
the line between jtag cable and fpga device is rather short. and I've tested the signal quality as well as powers of fpga. No problem found. The powers are rather good, only 10mV vpkpk noise.
2) I use STP to capture state machine's value, I found the state swithed to a value that I never defined. What's wrong with it?
Highly appreciated if anyone can give advice. thank you!
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Hi,
what kind of programming HW do you use ? No overshoots on your Jtag signals ?
Kind regards
GPK
Honored Contributor
