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Altera_Forum
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11 years ago

Can't Access Jtag Chain, No device was deteced

I was maked a new pcb board depend on Cyclone V, but issue the problem as the title described. 1, The board's powers are ok, but i did not control the power-up sequence, and this could make t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Hi;

thanks for your reply!

now i worked out this problem and the error is one of the 2.5V voltage driven the fpga pin is wrong (the voltage get out from the power-chip is good), i driven this pin from this chip direct and then the jtag become okay.

Tks.

eddy