Memory Interface Clock Alignment Using Wire Delay Compensation
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Solution Overview
Problem
Memory storage devices face inefficiencies in aligning clock signals due to temperature changes and process errors, requiring excessive time for adjustment, which reduces operational efficiency.
Innovation Solution
A connection interface circuit with a phase locking circuit and wire module that generates a second clock signal based on the delay feature of the wire module, aligning the clock signal with the memory controller's signal, thereby improving signal alignment efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the memory controller iteratively adjusts the delay amount of the output signal to align clock signals, then the clock signal alignment can be achieved, but the operational efficiency of the memory storage device is reduced due to excessive adjustment time
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing delay amounts in a delay table before actual operation. The memory controller queries the pre-computed delay table to obtain the required delay amount directly, eliminating the need for iterative adjustment during runtime. This resolves the contradiction by achieving precise clock signal alignment through pre-computed values while maintaining high operational efficiency.
2Reliability
If the memory controller spends more time to adjust the clock signal due to temperature changes and process errors, then the clock signal alignment accuracy can be maintained, but the operational efficiency is reduced
Solution Approach 1:
The patent performs preliminary calibration to generate and store delay amounts corresponding to different temperature conditions in a delay table before normal operation. During operation, the memory controller simply queries the table based on current temperature, achieving reliable clock alignment without time-consuming iterative adjustments. This resolves the contradiction by maintaining alignment accuracy through pre-computed compensation values while minimizing adjustment time.
Solution Approach 2:
The system implements self-service by automatically compensating for temperature-induced delay variations through the pre-built delay table. The memory controller autonomously queries and applies the appropriate delay amount based on temperature sensing, without requiring external intervention or complex real-time iterative adjustment mechanisms. This resolves the contradiction by maintaining reliable clock alignment through automated temperature compensation while minimizing time loss.
3Productivity
If a delay table is pre-calculated and stored to provide delay amounts for different temperatures, then the operational efficiency can be improved, but the device complexity increases
Solution Approach 1:
The patent creates a simplified copy of the delay compensation function by storing pre-computed delay amounts in a delay table rather than implementing complex real-time calculation circuits. The memory controller simply queries the table based on temperature, achieving high operational efficiency while keeping the added complexity minimal. This resolves the contradiction by using a lightweight lookup table approach that improves productivity with minimal increase in device complexity.
Data Source
AI summary
A connection interface circuit, a memory storage device and a signal generation method are disclosed. The connection interface circuit is configured to connect a memory controller to a volatile memory module. The connection interface circuit includes a phase locking circuit, a wire module and a signal interface. The signal interface is coupled between the wire module and the memory controller. The phase locking circuit is configured to receive a first clock signal from the memory controller. The phase locking circuit is further configured to generate a second clock signal according to the first clock signal and a delay feature of the wire module. The wire module is configured to provide a third clock signal to the signal interface according to the second clock signal.