SYSTEM AND METHOD FOR HANDLING MEMORY REPAIR DATA

摘要

In a system on chip (SOC) device, continuity of a memory repair signature chain, which is accessible by all enabled memory systems, is provided, even when certain memory systems are gated (off) for certain SOC configurations. A mechanism for converting between compressed and uncompressed memory repair data within the repair chain is provided so that memory systems that support either uncompressed memory repair data (such as ternary content addressable memories) or compressed memory repair data can be incorporated in the SOC.

主权项

1. An integrated circuit, comprising:
first and second memory systems, wherein each memory system includes a memory module having an associated first repair register for receiving compressed memory repair data, and wherein the first repair registers are connected in series as a chain; a store for storing compressed memory repair data for the first and second memory modules; and a processor, operably coupled to the store, for fetching the compressed memory repair data from the store and shifting the fetched compressed memory repair data through the chain for reception by the first repair registers, wherein the first memory system includes a second repair register and a decoder, wherein the decoder is operably coupled between the second repair register and the first repair register of the first memory system, and wherein the first memory system shifts compressed memory repair data for its memory module from the first repair register through the decoder to the second repair register for storage therein as decompressed memory repair data.