
2025-06-23 07:37:12
First round PI workup on the switch line card is done.
All of the other rails are fine, the only one with any significant issues of concern is 1V0 which I am suspecting might be a nothingburger (test point too close to the DC-DC so the local bypass caps dont have much of an impact).
Gonna solder a probe on to get a measurement at the actual BGA vias and see how noisy the rail is there, then probably put some diff probes on the QSGMII while I've got the thing decabled.