Intel® Quartus® Prime Standard Edition用户指南: 设计优化

ID 683230
日期 11/12/2018
Public
文档目录

7.8.3.2. 调整相移

使用此方程调整PLL输出时钟的相移。

普通模式下,Tap VCO、Initial VCO和Period VCO通过以下设置管理:

Tap VCO= Counter Delay- M Tap VCO

Initial VCO= Counter Delay- M Initial

Period VCO= In Clock Period x N÷M

外部反馈模式下,Tap VCO、Initial VCO和Period VCO通过以下设置管理:

Tap VCO= Counter Delay- M Tap VCO

Initial VCO= Counter Delay- M Initial

Period VCO= In Clock Period x N

(M+ Counter High+Counter Low)