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Altera_Forum's avatar
Altera_Forum
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16 years ago

Error: Can't access JTAG chain

When i try to program the FPGA cyclone III i get this error : error: can't access jtag chain error: operation failed. I am using a FPGA cyclone III .I would be able to program it a few months...
anonimcs's avatar
anonimcs
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1 year ago

For the USB Blaster 2 devices, if the USB cable is too long, this can happen especially if one uses a USB extension cable. Reducing the frequency to 6 MHz (the old Blaster's frequency) doesn't help either. But I never had this issue with the old Blaster, even with a USB extension.