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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 I/0, but synthesis and routing failed. After checking the pin connection user manual, the ADC pins cannot be used for analog and digital simultaneously. We don't want to modify the board, any other way to work around this? Thanks
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Hi Fan Xiong,
Yes, apologize that it cannot be used for both analog and digital pin simultaneously. Since it cannot be used simultaneously, the only way is to have digital pin placed on the other I/O pin or you change the FPGA image when you want to have that pin as digital I/O. This require remote update on the FPGA.
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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.
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Ya, since ADC channel will be used. Then you cannot use that pin as digital I/O.
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Hi Fan Xiong,
Apologize for my misunderstanding. I previously thought the 2nd design is not using ADC channel. If both also using ADC channel, then we need to follow the guideline.

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