Hi all!
I'm developing with a ZedBoard (rev. C1) and I need to use the XADC to read some analog inputs.
It'll be all done in VHDL, without the PS.
So for a first test (using the Chipscope Pro), I want to read the analog inputs (VAUX 0 and VAUX 8) that are present on the XADC header.
The question is how can I setup a circuitry to apply on these inputs.
My first idea is to hook up an potentiometer between the XADC_5V0 and XADC_AGND (with an resistor in series to prevent voltages larger than 1V). Connecting the XADC_N input on the XADC_AGND and the XADC_P input on the potentiometer output.
Is that correct?
Is there any RTL example of XADC use without the PS using the external analog inputs on the Zedboard?
Thanks.