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Altera_Forum
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16 years ago

JTAG can’t find device

Hi all, I am a beginner of Altera's device. Today, When I use the JTAG mode of Quartus’ programmer to configure the device EP3C5E144, the programmer always says “Unable to scan device chain. Can...
Altera_Forum's avatar
Altera_Forum
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16 years ago

When I connect the pad to GND, I can configure the FPGA in JTAG. In the programmer, I select the JTAG mode and click auto detect, the software can find a device EP3C10, not EP3C5E144. However, if I just add the “.sof” file directly, then the code can be download successfully and FPGA perform a right action.

Thank you, Ton and Daixiwen.