Article ID: 000074256 Content Type: Troubleshooting Last Reviewed: 01/23/2023

Do I need to connect a weak pull-up resistor or a weak pull-down resistor to the CONFIG_SEL pin in Intel® MAX® 10 devices when I do not use the dual configuration image mode?

Environment

  • Intel® Quartus® Prime Pro Edition
  • BUILT IN - ARTICLE INTRO SECOND COMPONENT
    Description

    No.  Table 2.  Configuration/JTAG Pins in Intel® MAX® 10 FPGA Device Family Pin Connection Guidelines version 2017.12.15 has the following guideline for CONFIG_SEL pin:

    Connect a weak 10-KΩ pull-up or weak 10-KΩ pull-down to this pin externally during the power-up phase.

    When you use dual configuration image mode, you need to connect a weak pull-up resistor or a weak pull-down resistor to the CONFIG_SEL pin externally to select one of two configuration images during the power-up phase.

    But when you do not use dual configuration image mode, you do not need to connect a weak pull-up resistor or a weak pull-down resistor to the CONFIG_SEL pin.  In single configuration image mode, image 0 is loaded after power-up without sampling the CONFIG_SEL pin.

    Resolution

    Refer to the latest document, Table 2.  Configuration/JTAG Pins in Intel® MAX® 10 FPGA Device Family Pin Connection Guidelines.

    Related Products

    This article applies to 1 products

    Intel® MAX® 10 FPGAs