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Altera_Forum
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16 years ago

Cyclone III Configuration

I have developed a custom board using Cyclone III (EP3C16E144C8) FPGA. I am using JTAG for programming and debugging purpose. I have attached the schematics for the configuration pins. The ...
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Altera_Forum
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16 years ago

Yes, I have grounded all three MSEL[0..3] pins for JTAG configuration.

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(6) Do not leave the MSEL pins floating. Connect them to VCCA or GND. These pins support the non-JTAG configuration scheme used in production.

Altera recommends connecting the MSEL pins to GND if your device is only using the JTAG configuration.

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although I have also interfaced a EPCS4 in case I need to use Active serial configuration in future. (please refer to schematics attached)

can the presence of EPCS4 hardware be an issue ?