Patent ID: 7650248

Claim:
A system for in-system monitoring of signals, comprising: an analog-to-digital converter disposed in an integrated circuit (IC); a sampling bridge coupled to provide an analog input to the analog-to-digital converter, the sampling bridge coupled to receive first signaling of a first frequency and being internal to the integrated circuit; a signal generator configured to provide second signaling at a second frequency, the second frequency being a fraction of the first frequency; sample window circuitry coupled to receive the second signaling and configured to provide third signaling to the sampling bridge at least partially responsive to the second signaling and at least partially responsive to an adjustable impedance setting of the sample window circuitry; and the sample window circuitry configured to provide an adjustable sample window within a pulse-width range; wherein the sampling bridge is located within a multi-gigabit transceiver of the IC, or the IC includes a multi-gigabit transceiver coupled to the sampling bridge.