10.4. Passive Channel JIF and Jitter Amplification

As shown in the previous section, a clock is often forwarded along with data for high-speed parallel interfaces. At high frequency, channel attenuation ^{[8] [9] [10]} significantly amplifies clock jitter. This section describes a closed-form jitter impulse function model [10] for a passive channel, and illustrates the jitter amplification due to channel attenuation.

As discussed in Chapter 9, the output signal y(t) can be expressed in terms of the superposition of progressively delayed channel step responses, as follows: