Memory system architectures using a separate system control path or channel for processing error information
First Claim
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1. A system, comprising:
- a memory that stores data, corrects an error in data read from the stored data, and generates error information in response to correcting the error in the data read from the stored data; and
a processor coupled to the memory through a first communication path and a second communication path, the first communication path being part of a main memory path and the second communication path being part of a system control path, the second communication path being separate from the first communication path, the processor;
receiving the data read from the stored data; and
receiving the error information from the memory,wherein the second communication path comprises an out-of-band communication path with respect to the first communication path.
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Abstract
An embodiment includes a memory module, comprising: a module error interface; and a plurality of memory devices, each memory device coupled to the module error interface, including a data interface and an device error interface, and configured to communicate error information through the device error interface and the module error interface.
70 Citations
18 Claims
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1. A system, comprising:
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a memory that stores data, corrects an error in data read from the stored data, and generates error information in response to correcting the error in the data read from the stored data; and a processor coupled to the memory through a first communication path and a second communication path, the first communication path being part of a main memory path and the second communication path being part of a system control path, the second communication path being separate from the first communication path, the processor; receiving the data read from the stored data; and receiving the error information from the memory, wherein the second communication path comprises an out-of-band communication path with respect to the first communication path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method, comprising:
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generating, by an error correction code (ECC) engine within a memory module, error information relating to an error in read data; receiving at the memory module through a system control channel a command to read the error information, the system control channel being separate from a main memory channel; and transmitting from the memory module the error information through the system control channel in response to the command. - View Dependent Claims (13, 14)
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15. A system, comprising:
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a memory that corrects an error in data read from the memory, and generates error information in response to correcting the error in the data read from the memory; a processor coupled to the memory through a main memory channel; and a system control channel that is separate from the main memory channel, the system control channel being coupled to the memory and the processor; wherein; the memory and processor communicate with each other through the main memory channel and the system control channel; the memory communicates the error information to the processor through the system control channel, and wherein the system control channel comprises an out-of-band communication path with respect to the main memory channel. - View Dependent Claims (16, 17, 18)
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Specification