Why does the recommendation for the connection of the unused GXB_RX and GXB_REFCLK pins disagree between the Stratix® V and Arria® V GZ pin connection guidelines documents and the Quartus® II software .PIN files? - Why does the recommendation for the connection of the unused GXB_RX and GXB_REFCLK pins disagree between the Stratix® V and Arria® V GZ pin connection guidelines documents and the Quartus® II software .PIN files? Description Due to a problem in Quartus® II Software version 13.1 and earlier, the recommendation for connecting unused GXB_RX and GXB_REFCLK pins for Stratix® V and Arria® V GZ devices is incorrect. The pin connection guidelines document states, "Connect all unused GXB_RXp or GXB_REFCLKp pins directly to GND or VCCR_GXB or VCCT_GXB.". The Quartus® II software .PIN file states, "GXB_GND*: Unused GXB Receiver or dedicated reference clock pin. This pin must be connected to GXB_GND through a 10k Ohm resistor." The Stratix® V and Arria® V GZ Pin Connections Guidelines documents are correct. Connection of the GXB_RX and GXB_REFCLK pins to GND through 10k Ohm resistors will not cause any damage. Resolution This problem is fixed starting with the Quartus® II version 14.0. Custom Fields values: ['novalue'] Troubleshooting 1408051628 False ['novalue'] ['FPGA Dev Tools Quartus II Software'] 14.0 13.1 ['Arria® V GZ FPGA', 'Stratix® V FPGAs', 'Stratix® V GS FPGA', 'Stratix® V GT FPGA', 'Stratix® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']