20240078029.Memory Calibration and Margin Check simplified abstract (apple inc.)

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Memory Calibration and Margin Check

Organization Name

apple inc.

Inventor(s)

Robert E. Jeter of Santa Clara CA (US)

Jingkui Zheng of Santa Clara CA (US)

Ritesh J. Shah of Sunnyvale CA (US)

Veera Chockalingam of Santa Clara CA (US)

Naveen Kumar Korada of Round Rock TX (US)

Memory Calibration and Margin Check - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240078029 titled 'Memory Calibration and Margin Check

Simplified Explanation

The patent application describes a memory calibration technique with a margin check, where a memory controller adjusts memory parameters based on stored calibration results for different performance states without repeating the calibration process.

  • Memory subsystem includes memory and memory controller
  • Calibration circuit in memory controller performs horizontal memory calibrations during initialization
  • Information on differences between calibration results for performance states stored in storage circuit
  • Memory controller sets memory parameters for new performance state based on stored differences
  • Operation in new performance state starts without repeating initial calibration

Potential Applications

This technology can be applied in various memory-intensive systems such as data centers, servers, and high-performance computing devices.

Problems Solved

1. Eliminates the need for repeating memory calibration for different performance states, saving time and resources. 2. Ensures optimal memory performance across different operating conditions without manual intervention.

Benefits

1. Improved memory performance and efficiency. 2. Simplified memory management process. 3. Enhanced system reliability and stability.

Potential Commercial Applications

"Memory Calibration with Margin Check: Enhancing Performance in Data Centers and Servers"

Possible Prior Art

Prior art may include similar memory calibration techniques used in memory subsystems of computing devices.

Unanswered Questions

How does this technology impact overall system performance?

This technology can significantly improve system performance by optimizing memory parameters based on different performance states, ensuring efficient memory operation.

What are the potential cost savings associated with this innovation?

By eliminating the need for repeated memory calibration and manual adjustments, this technology can lead to cost savings in terms of time and resources spent on memory management.


Original Abstract Submitted

memory calibration with a margin check is disclosed. a memory subsystem includes a memory and a memory controller coupled to the memory. the memory controller includes a calibration circuit configured to perform, during an initialization process, horizontal memory calibrations for ones of a plurality of performance states and to determine and store, in a storage circuit, information indicative of a set of differences between calibration results for pairs of the plurality of performance states. the memory controller is further configured to, subsequent to the initialization process and in response to a change from a first one of the plurality of performance states to a second one of the plurality of performance states set initial memory parameters for the second performance state based on the set of differences. thereafter, operation begins in the second performance state without performing an initial horizontal calibration.