为了提供客户使用中芯国际0.18微米混合信号布局设计规则。这是混合信号和射频设计使用。逻辑设计，请参考2001年TD- LO18- DR。-To provide SMIC 0.18μm Mixed Signal layout design rules for customers’ use. This is for Mixed-Signal and RF design use. For Logic design, please refer to TD-LO18-DR-2001.