US Patent 7463535 Memory modules and memory systems having the same

A memory module includes a port configured to receive write data and command/address signals and multiple memory devices. The multiple memory devices include a first set of the memory devices, each memory device of the first set coupled to the port, and a second set of the memory devices, each memory device of the second set configured to receive associated write data and associated command/address signals for the memory device through at least one of the other memory devices of the first set and the second set.