Just as there are design patterns to solve common software engineering problems: [1]http://en.wikipedia.org/wiki/Design_patterns Does it make sense to come up with design patterns for common layout problems? For example, 1) how does one commonly layout data/address lines between a PQFP/BGA cpu and SDRAM(TSOP)? 2) how to layout differential traces if they must cross each other - drive vias and make cross on the solder side - (OR) on component-side, one trace exits the pin directly, while the other loops around first pin (inside the footprint area) and exits. 3) escape routing for BGA? Pros: 1) No need to re-invent the wheel 2) Novices can learn/lookup solutions faster Cons: 1) Every layout problem is different! 2) There are already a extensive set of guidelines, so they should suffice
References 1. http://en.wikipedia.org/wiki/Design_patterns
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