I have created a circuit to replicate the functionality of an old 8-bit chip that I plan to use the Artix-7 on, and for development I am using a Cmod A7 to prototype.
I have found i am getting a lot of noise on the ground plane of the circuit (around 1.2v P-P). I have decoupling capacitors around my IC's and a voltage regulator with the correct capacitors.
I thought at first the issue was with something I had missed on my circuit, but if I unplug the Cmod A7 from the DIP48 socket, noise drops to around 200 Mv P-P.
Do I need to do extra work to decouple the Cmod A7 itself? I can see it has a lot of decoupling capacitors on-board anyway.
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steddyman
I have created a circuit to replicate the functionality of an old 8-bit chip that I plan to use the Artix-7 on, and for development I am using a Cmod A7 to prototype.
I have found i am getting a lot of noise on the ground plane of the circuit (around 1.2v P-P). I have decoupling capacitors around my IC's and a voltage regulator with the correct capacitors.
I thought at first the issue was with something I had missed on my circuit, but if I unplug the Cmod A7 from the DIP48 socket, noise drops to around 200 Mv P-P.
Do I need to do extra work to decouple the Cmod A7 itself? I can see it has a lot of decoupling capacitors on-board anyway.
Thanks
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