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AR# 37692

CoolRunner XPLA3 - Fitter report incorrectly marking GLKX/INx pins as having Weak pullups


For the CoolRunner XPLA2 CPLD the Fitter report incorrectly lists GLKX/INx pins as having Weak pullups.


The CoolRunner XPLA3 CPLD data sheet (ds012) states:

"Dedicated input pins (CLKx/INx) do not have on-chip weak pull-up resistors; therefore, unused dedicated input pins must have external termination."

However, when the user enables unused pins as pullup, the fit report will mark unused CLK pins as having "WPU". This is incorrect; the pins will not be pulled up and should have external termination.
AR# 37692
Date Created 09/15/2010
Last Updated 05/26/2014
Status Archive
Type General Article