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FXion's avatar
FXion
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5 years ago

Using Max 10 ADC pins for digital signal

We used 8 channels of the ADC + TSD for analog signal conversion, but one channel needs to be changed to a digital input (PWM signal). Initial thought was to free that ADC pin and use it as a digital...
YuanLi_S_Intel's avatar
YuanLi_S_Intel
Icon for Regular Contributor rankRegular Contributor
5 years ago

Hi Fan Xiong,

Yes since remote update is already available in the design. You may do like this. On image 1, change that pin to ADC pin and on image 2, change that pin to digital pin.

Thank You.

  • FXion's avatar
    FXion
    Icon for New Contributor rankNew Contributor
    5 years ago
    But when I changed the pin to a digital pin to create the 2nd image, Quartus generated an error: 176310 cannot place multiple pins assigned to pin location pin_B1 (IOPAD_X10_Y19_NO). I double checked that the ADC channel was released and not used. I Googled and tried Go to QuartusII Assignments menu -> Device -> Device and Pin Options -> Dual-Purpose Pins window, choose the value "Use as regular I/O". But this option is N/A due to the internal configuration mode. I still need to use the rest of the ADC channels, so maybe this still violates the MAX 10 I/O Restrictions Related to ADC Usage ( MAX 10 General Purpose I/O User Guide )