DDR and QDR converter and interface card motherboard and memory module interface using the same

摘要

PURPOSE: A DDR and QDR converter and an interface card, a motherboard and a memory module interface using the same are provided to significantly improve the efficiency of the DDR RAM's without incurring high fabrication cost. CONSTITUTION: The DDR and QDR converter and an interface, a motherboard and a memory module interface using the same. The DDR and QDR converter has a QDR interface, a DDR interface and a conversion core. The QDR interface is used to exchange a signal with QDR devices. The DDR interface is used to exchange a signal with DDR devices. The conversion core is used to convert QDR command and data formats into DDR command and data formats, and to convert DDR command and data formats into QDR command and data formats.