Direct connection of ADC output to Digital I/O pins in Analog Discovery 2

[jcchien]

Hi,

I am interested in whether we can direct connect the ADC output (14b) to the digital I/O pins in Analog Discovery 2 without going through the RAM/buffer. The reason I want to do this is because I want to do customed DSP on another FPGA board at real-time. Appreciate of any feedback!

 

jcchien

[attila]

Hi @jcchien

Unfortunately such option is not provided.
This would require outputting 100MHz clock and DDR on the DIO lines. Due to the protection on these (diode/ptc) I doubt it would work and due to long traces/wiring such digital transmission could highly affect the analog signals.