Why does my Intel® MAX®10 device not load the image from CFM0 at power-up when CONFIG_SEL is pulled low via the recommended 10-K Ohms? - Why does my Intel® MAX®10 device not load the image from CFM0 at power-up when CONFIG_SEL is pulled low via the recommended 10-K Ohms?
Description As the CONFIG_SEL pin in Intel® MAX® 10 devices is a dual-purpose pin, it is equipped with an internal weak pull-up that is enabled by default before user mode. Based on the values of the internal weak pull-up resistor in Table 17 in the Intel® MAX® 10 FPGA Device Datasheet , under some conditions, a 10-K Ohm external pull-down may not be strong enough to result in a logic low, resulting in the image not loading from CFM0 when the CONFIG_SEL function is enabled. Resolution If you are affected by this issue, you can equip a stronger external pull-down resistor (e.g. 1-K Ohms) on CONFIG_SEL. Alternatively, you can disable the option “Set I/O to weak pull-up prior user-mode” in the .icb settings. Note that this will disable the weak-pull up during configuration for all general-purpose I/O pins too.
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Troubleshooting
18033451527
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['MAX® 10 10 FPGAs']
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['novalue'] - 2023-09-13
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