Recommended VCCR_GXB and VCCT_GXB settings for Arria V GX C4, C5, C6 and I5 designs that run transceivers at less than or equal to 3.125 Gbps

Description

If your design targets an Arria V GX C4, C5, C6 or I5 device and implements a data rate less than or equal to 3.125 Gbps, Altera recommends setting V_{CCR_GXB} and V_{CCT_GXB} to 1.1V to reduce power consumption. The Quartus II software sets the default VCCR_GXB and VCCT_GXB settings to 1.15V. You may change the VCCR_GXB and VCCT_GXB settings to 1.1V manually.

Resolution

Add the following assignment to your Quartus II Settings File (.qsf):

set_instance_assignment -name XCVR_VCCR_VCCT_VOLTAGE 1_1V -to *