Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

basic problem with cycloneiii

I have a ep3c40q240c8.i can configure it from jtag and also program it's epcs16 and verifiy it.but the fpga after configuration have no effect.for example all pins are 1;no output affected by input;n...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

if you can check your image via jtag and it runs as expected, then the source should be epcs & fpga connetion related.

could you verify that the MSEL pins are setup for AS mode ?

when powering up the system, do you see the fpga request at the epcs pins ? you should see the DCLK and other signals...

if this happens, do you see changes at the output of your epcs device that it is responding ?