决定DDR反馈时钟的最佳DCM相移 Application Note: Embedded Processing R Determining the Optimal DCM Phase Shift for the DDR Feedback Clock XAPP806 (v1.2) June 5, 2007 Abstract This application note describes how to build a system that can be used for determining the optimal phase shift for a Double Data Rate (DDR) memory feedback clock. In this system, the DDR memory is controlled by a controller that attaches to either the OPB or PL……