HardwareHacker Noonabout 7 hours ago
Field Link Flaps Expose Rigid SerDes Tuning
9 min read
A high-speed Ethernet link passed lab tests but flapped intermittently in the field due to rigid SerDes tuning. Fixed configurations lacked signal margin under real-world temperature, noise, and board variation. Adaptive tuning, based on signal conditions, replaced static settings after development-board and temperature-extreme testing.
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