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Altera_Forum's avatar
Altera_Forum
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16 years ago

DCLK after config in PS mode

We're doing a design where we're planning on configuring a EP3C5 using passive serial from a micro controller. We're limited by the number of interconnects and I was wondering about the possibi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

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There is no problem. In fact the DCLK can be used as a regular I/O on the FPGA after configuration, so you don't need to connect it to an extra I/O.

Have a look in Quartus in the device settings, click on the 'Device and pins options...' button, and select the 'dual purpose pins' tab.

--- Quote End ---

DCLK is a dual purpose pin in active serial configuration. But if you switch the settings to passive serial, the DCLK pin disappears from the dual purpose pin list.