Timing issues, the current domestic users have not mastered basic. A typical example is the only choice Pericon 16245 rather not use TI's 16245, and such examples happened many times. Thereby causing a lot of pre-designed PCB because the device manufacturer's replacement, causing the system to function abnormally and redesign. In addition, there are a considerable number of domestic users do not understand the basic logic operating level requirements and impedance concepts, unaware Source-Load-driven analysis. The main reason is not familiar with the tools and the SI poorly understood. Schematic designer is basically do not do the work of the area. Currently common SI problems, mainly during the PCB layout designer. Complexity ICX weaknesses and set on its GUI enables users reluctant to use the tool. Rather it is, Hyperlynx more convenient in EMC prediction, which is an advantage Hyperlynx of. Hyperlynx advantage is easy to use, but neither the timing analysis, and no timing measurements. But SQ no timing analysis capabilities, limited only simple timing measurements. Performance, SQ's strengths is that it is itself a PCB layout tool, so it suitable for practical PCB layout routing performance is better, that is, on-site commissioning (On-The-Fly) performance is better. On Tools is concerned, SQ, Hyperlynx or ICX can be solved. Basically domestic users already know how to handle and analyze common SI problems. For ordinary SI issue, Hyperlynx, SQ and ICX can be solved. Design needs to solve various problems usually only in the field of microwave transmission link will consider the small size and shape because walking lines, vias and materials caused. The microwave band transmission problems. That resolve driver issues or to calculate the termination resistor in series damping resistor values, PCB laminate structure and characteristic impedance calculation, wiring topology analysis.ģ. Timing is the key issue, the current core chip manufacturer designer basically ready-made solutions, so the design of the main part of the work is how to ensure compliance with the timing chip PCB can work requirements.Ģ. PCB signal integrity can easily be divided into three categories:ġ.
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