Memory buffer for memory module, has memory-sided bus system and redundancy memory between which bus signal is transmitted and redirected on basis of comparison of memory cell addresses

摘要

The buffer has a memory logic unit (8) connected with a memory-sided bus system (MBS) and a host-sided bus system (HBS). A redundancy memory (15) is provided such that memory cell addresses of the memory logic unit are compared with addresses of another memory cell unit. A bus signal that is transmitted between the memory-sided bus system and the redundancy memory is redirected based on the comparison of the memory cell addresses. Independent claims are also included for the following: (A) a method for operating a memory buffer (B) a memory module with a memory buffer.