By Jose Moreira
Delivering an entire creation to the cutting-edge in high-speed electronic checking out with automatic attempt gear (ATE), this sensible source is the 1st e-book to concentration completely in this more and more vital subject. that includes transparent examples, this one-stop reference covers all severe points of the topic, from high-speed electronic fundamentals, ATE instrumentation for electronic functions, and attempt and measurements, to construction checking out, help instrumentation and textual content fixture layout.
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Additional info for An Engineer's Guide to Automated Testing of High-Speed Interfaces
This phase detector with the help of the integrated charge pump generates a current on its output that represents the instantaneous phase difference between the comparison frequency and the PLL output frequency that is fed back via a divider to the second input of the phase detector. The generated current is converted via the loop filter impedance Z(s) into an average voltage that is fed into a voltage controlled oscillator (VCO). The VCO converts the voltage at its input into a proportional output frequency that serves as output of the PLL as well as input to the feedback loop of the PLL.
30 Signal path loss effect on the spectral power density and data eye for a two-symbol alternating pattern 11000001000001100000100000... . 34 An Engineer’s Guide to Automated Testing of High-Speed Interfaces Bounded Uncorrelated Jitter Bounded uncorrelated jitter is defined as deterministic jitter that is bounded but uncorrelated with the data pattern. One example of a mechanism that causes this type of jitter is the crosstalk from an adjacent data line belonging to a different bus with a different frequency.
These control and status signals are referred to as sideband signals. Besides increased data rates, high-speed I/O interfaces also tend to reduce the amount of sideband signals and integrate the status and control information that needs to be conveyed to partner devices into the regular communication protocol that runs on the signals which are also used for payload data exchange. The most extreme example of this are high-speed I/O interfaces that use serial links. These typically eliminate sideband signals completely to get maximum benefit from the serialization and an optimal ratio of signals that transfer payload data and signals that transfer sideband information.
An Engineer's Guide to Automated Testing of High-Speed Interfaces by Jose Moreira