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Altera_Forum
Honored Contributor
13 years agoI had other IOs with the IO-Standard SSTL-135. In default setting, this IO standard termination will generated with calibration and therefore another termination block.
Adding the "without termination" assignment for those pins solved the problem. ****************************************************************************** set_instance_assignment -name OUTPUT_TERMINATION "SERIES 34 OHM WITHOUT CALIBRATION" -to I2C_SDA ... ******************************************************************************