| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a memory module of a 4 rank configuration which can perform high-speed transmission of a data signal without deteriorating signal quality, can provide transmission characteristics of signal wiring of various control signals, and is advantageous for lowering power consumption. <P>SOLUTION: A memory module is provided with a point to point bus and a daisy chain bus for supplying a signal to a stacked memory and a stacked memory having at least a space of one of this stacked memory is mounted on one face and face of another side respectively. Moreover, the memory module is configured so that a memory chip comprising a stacked memory mounted on one face of module substrate and a memory chip comprising a stacked memory mounted on a face of the other side of the module substrate are set active by turns and simultaneously. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
