Forum Discussion

SRame5's avatar
SRame5
Icon for New Contributor rankNew Contributor
6 years ago

Under what conditions would a JTAG verification failure occur?

We are using 2 Max 5 devices in our board, identical part numbers 5M2210ZF324​ with similar board designs for each device. While we are able to program one of the devices successfully, we are getting...
a_x_h_75's avatar
a_x_h_75
Icon for Contributor rankContributor
6 years ago

Do you have two devices in one JTAG chain? Or two separate chains?

Signal integrity can be an issue. JTAG can be fussy. Do you have any long, unbuffered traces?

Cross talk - do you have any nearby signals causing interference?

Cheers,

Alex