Article ID: 000085523 Content Type: Troubleshooting Last Reviewed: 02/08/2013

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

Environment

  • Quartus® II Subscription Edition
    • BUILT IN - ARTICLE INTRO SECOND COMPONENT

    Critical Issue

    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 VCCR_GXB and VCCT_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 *

    Related Products

    This article applies to 1 products

    Arria® V FPGAs and SoC FPGAs

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