Memory Media Testing Through CXL-to-DDR Controller Translation
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Solution Overview
Problem
Emerging memory systems connected via abstracted interfaces lack direct host control for media testing, necessitating a solution to enable host-controlled testing without interrupting system operation.
Innovation Solution
A controller translates between host and memory protocols, enabling media test capability discovery, configuration, and result reporting, allowing hosts to control memory devices through an abstract interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If memory devices are connected via abstracted interfaces, then system operation continues uninterrupted, but host control for media testing is lost
Solution Approach 1:
The patent introduces a controller as an intermediary component between the host and memory devices. The controller translates host requests into memory-specific commands and reports back test results, enabling the host to control media testing of memory devices connected through abstracted interfaces without interrupting system operation. This mediator resolves the contradiction by maintaining both system continuity and host control capability.
2Measurement precision
If media testing is performed on memory devices, then signal integrity and bit error rates are assessed, but system operation must be interrupted
Solution Approach 1:
The patent enables media testing to be performed on memory devices while the system continues to operate. The controller manages test execution in a manner that does not require system shutdown or interruption, allowing continuous assessment of signal integrity and bit error rates without losing productive system operation time.
3Adaptability or versatility
If direct host control over memory is implemented, then media testing capability is enabled, but interface complexity increases
Solution Approach 1:
The controller serves as an intermediary that abstracts the complexity of direct memory control. It translates high-level host requests into specific memory control commands, enabling media testing capability while shielding the host from the underlying interface complexity. This maintains adaptability without exposing interface complexity to the host system.
Data Source
AI summary
A controller can be configured to enable a host to control media testing on a memory device. The interface between the host and the memory can be abstract, such that the host does not have direct control over the memory. Instead, the controller can provide translation between a host protocol, such as compute express link (CXL), and a memory protocol, such as a protocol to control a dual data rate (DDR) interface. The controller can enable media test capability discovery, configuration, and/or control for the host. The controller can enable media test result reporting from the memory to the host.