Memory Write Clock Duty Feedback for Data Reception Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Memory devices face challenges in efficiently managing duty errors of write and read clocks, leading to degraded data reception performance due to duty distortion in clock signals, which existing technologies struggle to address effectively.
Innovation Solution
A memory device with a clock receiver, duty monitor, and duty adjuster that receives and adjusts write clocks, and provides monitoring information to the memory controller to optimize clock duty cycles, allowing for independent control of write and read clock duties to minimize errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If duty adjustment is performed using existing technologies, then some clock duty control is achieved, but data reception performance degrades due to duty distortion in clock signals
Solution Approach 1:
The patent implements a feedback mechanism where the memory device monitors its own clock signal duty cycle and reports duty monitoring information to the memory controller. The memory controller then generates duty control signals based on this feedback to adjust the clock duty cycle, creating a closed-loop control system that continuously optimizes clock signals to prevent duty distortion and maintain data reception performance
Solution Approach 2:
The memory device performs self-monitoring of clock signal duty cycles through internal duty monitoring circuits. The device autonomously detects duty distortion in received clock signals, generates duty monitoring information, and reports it back to the memory controller, enabling the system to self-correct without external intervention
2Reliability
If clock duty is adjusted to minimize errors, then data reception performance improves, but system complexity increases due to additional monitoring and control mechanisms
Solution Approach 1:
The patent divides the duty cycle adjustment functionality into separate modular components: duty monitoring circuits in the memory device, duty control signal generation in the memory controller, and duty adjustment circuits. This segmentation allows each component to perform its specific function independently, making the complex system easier to design, implement, and maintain while achieving precise clock duty control
Solution Approach 2:
The patent introduces duty monitoring information as an intermediary data structure that carries duty cycle status from the memory device to the memory controller. This intermediary enables communication between the monitoring and control components without requiring direct complex interactions, simplifying the overall system architecture
Data Source
AI summary
A memory device includes a clock receiver configured to receive, from a memory controller, a write clock that is used to receive write data during a data write operation, a duty monitor configured to generate first monitoring information by monitoring a duty of the write clock, and a duty adjuster configured to adjust the duty of the write clock in response to a duty control signal and output an adjusted write clock. The memory device provides the first monitoring information to the memory controller, and receives the duty control signal, generated using the first monitoring information, from the memory controller.