Patent ID: 7394260

Claim:
A method for determining a configuration of a device comprising a plurality of signal traces and one or more test traces configured to capacitively couple to said plurality of signal traces, the method comprising: selecting a test frequency of a test signal to be driven on selected ones of said plurality of signal traces during a test mode of operation of said device; and tuning one or more circuit characteristics of a given one of said one or more test traces to generate a bandpass frequency response of said given test trace including a passband and a stopband, wherein a detection frequency corresponding either to said test frequency or a selected harmonic of said test frequency is included in said passband; wherein said tuning one or more circuit characteristics of said given test trace comprises selecting a degree of capacitive coupling between said given test trace and each of multiple ones of said plurality of signal traces such that, within a specified constraint for signal degradation on said multiple ones of said signal traces, said bandpass frequency response of said given test trace satisfies a specified transmission requirement at said detection frequency.