Samsung Electronics Co., Ltd.

Won-ki Song

Tae-Sung Jung

An integrated circuit memory system includes one or more memory modules in which at least one of the memory modules is responsive to a control signal and has delay control information stored thereon. The memory system further includes a memory controller that is configured to generate the control signal in response to the delay control information.

Memory device controls delay time of data input buffer in response to delay control information based on a position of a memory device received from memory controller

Memory modules, and related memory module sockets, can include a plurality of connector pins adjacent to a first edge of the memory module that are configured to conduct a plurality of first signals to or from the memory module via the first edge and a plurality of first conductors adjacent to a second edge of the memory module that are configured to conduct a plurality of second signals to or from the memory module via the second edge.

Memory modules having conductors at edges thereof and configured to conduct signals to or from the memory modules via the respective edges

A memory module for preventing skew between bus lines is provided. The memory module includes a printed circuit board, memory chips, module tabs and bus lines. The memory chips are disposed on the printed circuit board, and the module tabs are disposed at one edge of the printed circuit board. The bus lines are connected to the module tabs, respectively, and are connected to the memory chips. Each of the bus lines is formed a closed circuit loop. Each of the bus lines is connected to the memory chips through a circuitous or roundabout path which includes first and second paths of, in general, different lengths. The first and second paths of the roundabout path branch from each other at a position on the closed circuit loop. Since each bus line on the memory module forms a closed loop, skew does not occur between control signals or output data, which are transmitted through the bus line.

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Kyungki-do, South Korea

Won-ki Song