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Altera_Forum
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17 years ago

3 Boundary Scan Cells Operating Incorrectly

Who can solve this Cyclone III problem? Three boundary scan cells on my board in my CycIII EP3C40F780 behave as if they have 500 Ohm resistors inbetween the driver and the pin. (Used as SSTL2...
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Altera_Forum
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17 years ago

No thoughts anyone?

Three boundary scan cells behave in a drive-strength limited fashion, or incorrect output voltage level fashion.

If you were sure the BSDL file was correct, that the FPGA is definitely not configured at the time of test, and the board layout and physical build is proven, what else would you look at?

I have Altera support looking into it, as well as Corelis (developer of boundary scan test software and hardware).