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MAX 10 pin assignment error

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hareeshP

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Hi all,
I'm currently using the MAX 10 (10M02SCU169A7G) for one our project. In MAX 10 (10M0) fpga the pin C4 and C5 are nSTATUS and CONFIG_DONE respectively.
And we have used this pin for some other purpose also. As per the datasheet both these pins are dual purpose pins. When i do the I/O Assignment analysis i am getting the following errors.

Error (176310): Can't place multiple pins assigned to pin location Pin_C4 (IOPAD_X3_Y7_N14)
Info (176311): Pin MR is assigned to pin location Pin_C4 (IOPAD_X3_Y7_N14)
Info (176311): Pin ~ALTERA_nSTATUS~ is assigned to pin location Pin_C4 (IOPAD_X3_Y7_N14)

In some forums giving solutions like "change the settings of dual purpose pins in the quartus software" but i am not able do this because the window for this settings in quartus software is grayed out (Attaching the screenshot)
 

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  • MAX 10 Dual purpose pin settings.JPG
    MAX 10 Dual purpose pin settings.JPG
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