Netbook Schematic guideline re...

Netbook Schematic guideline reduce EMC

Schematic guideline reduce EMC

Schematic guideline
Clock:
1. All clock traces add RC filter on the source side, and if the clock
drive two chipset (or above) refer the following circuit.
所有时钟线要作源端RC匹配，如果时钟输出有两个或多个负载，参考下列电路图.

2. Use π(C-L-C) type of filter for Oscillators’ power supply input.
在晶振的电源输入端加π型滤波.
3. If the IC clock output pins are not used, we best close it by through
software. Add R or C bypass to GND as terminal if we can’t close it by
software
如果有芯片的时钟输出脚没有用到，首先看能否用软件关掉该脚的输出，如果不行，在
时钟脚加R或C到地
4. Suggest don’t lay another trace just for the clock test point.
时钟线上不要加测试点
5. Suggest adding damping resistors on the high speed signal traces or
reserve 0 ohm resistance.
建议在所有高速信号线上串阻尼电阻,或者预留0 ohm 电阻.
Power:
1. The bulk capacitors which u