Programmable Devices
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warning on ALT_ASMI_Parallel_Interface

Altera_Forum
Honored Contributor II
‎11-21-2010 12:11 PM
1,039 Views

I have a Cyclone III EP3C5 design that uses an EPCS4 device in AS mode for remote system update. 

I add the ALT_ASMI_Parallel_Interface for writing and reading EPCS4,but quartus gives Warning: Following 1 pins must use external clamping diodes. I found this pin: cycloneii_asmiblock3~ALTERA_DATA0. it's not in my port list, i guess it is automatic assigned by quartus when using ALT_ASMI_Parallel_Interface. 

does anyone know how to deal with this? 

 

Thanks a lot in advance
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Altera_Forum
Honored Contributor II
‎11-21-2010 04:47 PM
305 Views

The warning is about configuration pin DAT0. I would however primarly follow the device manual suggestions that recommend a series termination at the EPCS device but no clamping diode.

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