DDR SDRAM控制器的VHDL源代码，含详细设计文档。 The DDR, DCM, and SelectI/O™ features in the Virtex™ -II architecture make it the perfect choice for implementing a controller of a Double Data Rate (DDR) SDRAM. The Digital Clock Manager (DCM) provides t

本文主要描述了如何在QUARTUS II 中输入程序文件，生成网表及标准延时文件，然后通过 MODELSIM进行功能仿真与后仿真的过程，主要为图解，含全部代码及仿真波形。 -This article describes how to enter at QUARTUS II program file, generate netlists and standard delay file, and then through the ModelSim for functional simulation

programmable delay register (16-bit) in VHDL source code