Memory Controller Address Map Selection via Channel Monitoring
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Solution Overview
Problem
Existing semiconductor memory controllers face limitations in accurately determining optimal channel interleaving due to human error and inefficiencies in existing address mapping schemes, which compromise performance.
Innovation Solution
A semiconductor system that includes an address mapping unit, a monitoring unit, and a control unit to select an optimal address map based on channel interleaving performance, using a Misses per Kilo Cycles (MPKC) monitor to analyze requests across channels and adjust mapping accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a plurality of address maps are provided and test signals are directly inputted to all address maps to determine optimal channel interleaving, then comprehensive address map evaluation is achieved, but the burden on the user increases and human error may compromise accuracy
Solution Approach 1:
The memory controller automatically performs address map evaluation by internally generating test patterns and monitoring channel interleaving results, eliminating the need for users to manually input test signals. The system self-evaluates multiple address maps and selects the optimal one based on monitored performance metrics.
Solution Approach 2:
The system implements a feedback mechanism where the monitoring unit observes channel interleaving results from address map operations, and this feedback is used by the control unit to automatically select the optimal address map, creating a closed-loop system that improves accuracy without increasing user burden.
2Measurement precision
If existing schemes require a user to directly input a test signal while changing the address maps one by one, then address map evaluation can be performed, but the process is time-consuming and prone to human error
Solution Approach 1:
The memory controller pre-configures multiple address maps and automatically prepares test patterns before actual evaluation begins. The system proactively manages the entire evaluation process, including sequential activation of different address maps and automated monitoring, eliminating manual intervention delays.
Solution Approach 2:
The system automatically cycles through different address maps, inputs test signals, and monitors results without requiring user intervention for each individual test. This self-service approach dramatically reduces test time while maintaining evaluation accuracy.
3Adaptability or versatility
If manual address map selection is used, then flexibility in choosing different address maps is maintained, but the accuracy of channel interleaving determination is compromised due to human error
Solution Approach 1:
The monitoring unit continuously observes channel interleving performance metrics for each address map, providing objective feedback data. The control unit uses this feedback to automatically determine the optimal address map, replacing subjective manual selection with objective automated decision-making that eliminates human error while maintaining flexibility.
Solution Approach 2:
The system automatically varies the address map configuration parameter and monitors the resulting channel interleaving performance, using these parameter changes to systematically evaluate different address maps and select the optimal one based on measured performance rather than manual choice.
Data Source
AI summary
A semiconductor system may include a plurality of memory devices corresponding to a plurality of channels, an address mapping unit suitable for converting addresses corresponding to provided external requests according to a selected address map among a plurality of address maps; a monitoring unit suitable for monitoring the external requests provided to each of the plurality of channels, and a control unit suitable for providing a control signal for controlling the address mapping unit to select an address map according to a result of the monitoring.