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Altera_Forum
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14 years ago

Impossible to configure Cyclone III with JTAG

Hello, I have a problem with Cyclone III EP3C25F324 device programming. I'am using a board with 1 cyclone III, a EPCS128 device and a PC28F128P30BF65E flash. Flash Ram is not connected to th...
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Altera_Forum
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14 years ago

No you don't have to connect the VREF pins to anything.

How di dyou measure the TCK high level? Are the signals toggling when you attempt to access the component through JTAG?

How are the JTAG pins connected and which pull ups/down did you use?

Are you sure that the BGA balls are soldered correctly?