Memory repair method and apparatus based on error code tracking

摘要

A memory module is disclosed that includes a substrate, a memory device that outputs read data, and a buffer. The buffer has a primary interface for transferring the read data to a memory controller and a secondary interface coupled to the memory device to receive the read data. The buffer includes error logic to identify an error in the received read data and to identify a storage cell location in the memory device associated with the error. Repair logic maps a replacement storage element as a substitute storage element for the storage cell location associated with the error.

主权项

1. A memory module comprising:
a substrate; a memory device disposed on the substrate, the memory device to output read data; and a buffer having a primary interface for transferring the read data to a memory controller and a secondary interface coupled to the memory device, the secondary interface to receive the read data, the buffer including
error logic to identify an error in the received read data and to identify a storage cell location in the memory device associated with the error, andrepair logic to map a replacement storage element as a substitute storage element for the storage cell location associated with the error.