Article ID: 000087531 Content Type: Error Messages Last Reviewed: 02/14/2022

Why does configuration fail on Intel® Agilex™ FPGA Rev A Development Kits when using Intel® Quartus® Prime Pro Edition Software version 21.2?


  • Intel® Quartus® Prime Pro Edition

    Due to a problem with the Linear Voltage Regulators (LTM46XX) used on some of the Intel® Agilex™ FPGA Rev A Development Kits, you may experience configuration failures when using Intel® Quartus® Prime Pro Edition Software v21.2.  This failure occurs because the voltage required by Intel® Agilex™ devices during configuration is higher than the voltage the LTM46XX Regulators are programmed to supply. 


    You might see the following error messages during configuration:

    • Error(18948): Error message received from device: External hardware access error. (Subcode 0x0032, Info 0x00800008, Location 0x00001800)
    • Error(22248): Detected a PMBUS error during configuration. Potential errors: VID setting is incorrect in the Intel Quartus Prime project. The target device fails to communicate to a smart regulator or PMBUS master on a board.

    To solve this problem, you will need to reconfigure the Non-Volatile Memory registers of the Linear Voltage Regulator using a Linear Technologies USB-to PMBus Controller and the Linear Technologies LTpowerPlay Software.


    Using the PMBus Controller and the LTpowerPlay software, configure the following register values for the LTM46XX device:

    • VOUT_MAX = 1.0V
    • VOUT_OV_WARN_LIMIT = 30%

    Changing these values will configure the LTM46XX Voltage Regulator to operate within the required voltage range and allow the Intel® Agilex device to configure successfully.

    Related Products

    This article applies to 2 products

    Intel® Agilex™ 7 FPGAs and SoC FPGAs F-Series
    Intel® Agilex™ F-Series Development Kits



    All postings and use of the content on this site are subject to Terms of Use.