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xytech's avatar
xytech
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7 years ago

Can A10 INIT_DONE be pulled up to 3.3V?

Hi there, We plan to connet INIT_DONE signal to MCU(3.3V) so we could know when A10 FPGA enters user mode. Although INIT_DONE is an Open-Drain output, however, A10 pin-connection guide.pdf page10 ...
ChiaLing_T_Intel's avatar
ChiaLing_T_Intel
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7 years ago

Hi XY,

For your information, INIT_DONE is a dual purpose pin which can be used as an I/O pin when not enabled as the INIT_DONE pin. However when you use this pin in configuration mode, you have to enable the INIT_DONE pin in the Intel Quartus Prime Software and connect it to an 10kohm pull up resistor to VCCPGM. It is powered up by VCCPGM when used as dedicated INIT_DONE pin. You can connect it to VCCIO if it is used as an I/O pin.

Thank you

Regards,

Chia Ling

  • xytech's avatar
    xytech
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    7 years ago

    Thanks, understand.