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US 7,460,585 B2Granted
Methods and systems for detecting defects in serial link transceivers
AssigneeBroadcom Corporation
InventorPieter Vorenkamp
Life of this patent
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Abstract
Methods and systems for detecting defects in serial link transceivers. Defect detection includes detecting open circuits in one or more of the transmission lines, detecting short circuits between one or more of the transmission lines and a power supply, detecting short circuits between the transmission lines, or detecting short circuits across optional AC-couplings in the transmission lines. The detection can include direct or indirect detection of voltage or current.
Claims21
A serial link transceiver with defect-detecting capability, comprising:
- a differential transmitter configured for differential signal transmission;
- a differential receiver configured to receive a differential signal from the differential transmitter;
- first and second differential transmission lines that are AC-coupled between the differential receiver and the differential transmitter;
- and
- wherein the differential receiver includes a monitoring system that detects a defect in one of the differential transmission lines, the monitoring system determining the defect based on a common mode signal threshold detected in the differential signal received at the receiver;
- and
- wherein the monitoring system is configured to detect short circuits across AC-coupling capacitors in one of the AC-coupled differential transmission lines.
4 more elements
Dependencies are inferred from the claim text.