High speed digital systems Project Status D0913 Avital Katz Elad Yaniv D0913 Avital Katz Elad Yaniv

High speed digital systems Topics of Discussion PCI Express overview HyperLynx Simulations PCI Express overview HyperLynx Simulations

High speed digital systems Overview: Intel’s new PCI Express

High speed digital systems HyperLynx HyperLynx EXT and GHz are bundles of Mentor Graphics' HyperLynx family of high-speed design tools, including signal- integrity, crosstalk, EMC, and advanced high-speed analysis features

High speed digital systems Our Simulations: What is Signal-Integrity Analysis? “Signal-integrity analysis is concerned with the quality of the digital signals on a printed circuit board.“ Why do signal-integrity effects occur, and why so much more today than before? “when a higher-frequency signal (i.e., a signal that switches more quickly) travels along the same trace, the trace exhibits circuit characteristics that distort and degrade the signal.” What is Signal-Integrity Analysis? “Signal-integrity analysis is concerned with the quality of the digital signals on a printed circuit board.“ Why do signal-integrity effects occur, and why so much more today than before? “when a higher-frequency signal (i.e., a signal that switches more quickly) travels along the same trace, the trace exhibits circuit characteristics that distort and degrade the signal.”

High speed digital systems What is Crosstalk Analysis? Crosstalk analysis is a particular category of signal-integrity simulation that looks specifically at unwanted noise generated between signals. Crosstalk is a particularly hard phenomenon to anticipate and control unless you're able to simulate it, because there is almost no way of intuitively knowing how much crosstalk voltage and current will develop due to a given coupling. Crosstalk analysis is a particular category of signal-integrity simulation that looks specifically at unwanted noise generated between signals. Crosstalk is a particularly hard phenomenon to anticipate and control unless you're able to simulate it, because there is almost no way of intuitively knowing how much crosstalk voltage and current will develop due to a given coupling.

High speed digital systems

What is EMC Analysis? EMC analysis (electromagnetic-compatibility analysis), in contrast to signal-integrity and crosstalk simulation which are concerned with high-speed effects on the board, deals with how the PCB interferes with other electronic boards and systems. the medium for this interference is electromagnetic radiation, which is generated as an inevitable consequence of the currents flowing through the board's traces when driver ICs switch. EMC analysis (electromagnetic-compatibility analysis), in contrast to signal-integrity and crosstalk simulation which are concerned with high-speed effects on the board, deals with how the PCB interferes with other electronic boards and systems. the medium for this interference is electromagnetic radiation, which is generated as an inevitable consequence of the currents flowing through the board's traces when driver ICs switch.

High speed digital systems What is "GHz Analysis"? "GHz analysis" is a general term for the collection of special techniques used to analyze gigabit-per-second (Gbps) SERDES-based designs. GHz-level analysis must account for lossy effects and the electrical complexities of vias. "Loss" refers to the phenomenon in which PCB-trace resistance and the heating of dielectric materials (like FR-4) cause signals to lose amplitude (i.e., attenuate) and suffer shape distortion (disperse). Sub-GHz designs are typically characterized with simple waveforms and delay values, but GHz-level designs require special techniques like "eye diagrams" and "jitter" measurement. "GHz analysis" is a general term for the collection of special techniques used to analyze gigabit-per-second (Gbps) SERDES-based designs. GHz-level analysis must account for lossy effects and the electrical complexities of vias. "Loss" refers to the phenomenon in which PCB-trace resistance and the heating of dielectric materials (like FR-4) cause signals to lose amplitude (i.e., attenuate) and suffer shape distortion (disperse). Sub-GHz designs are typically characterized with simple waveforms and delay values, but GHz-level designs require special techniques like "eye diagrams" and "jitter" measurement.