Continuously Driven Signal Lines for Dense Crosstalk-Prone Layouts
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Solution Overview
Problem
In high-density signal line configurations, crosstalk between parallel adjacent signal lines causes data timing issues and transmission errors, necessitating additional isolation wires and state keepers that increase layout area.
Innovation Solution
A signal line structure where each signal line is maintained in a drive state at all times, using a driver configuration with enable signals to ensure only one driver is active at a time, eliminating the need for isolation lines and state keepers, thereby reducing crosstalk and layout area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If isolation wires and state keepers are added to prevent crosstalk, then signal stability is improved, but layout area increases
Solution Approach 1:
The patent removes the isolation wires and state keepers from the signal line structure, eliminating the components that occupied additional layout area while maintaining signal integrity through a different mechanism (continuous drive state control)
Solution Approach 2:
The patent changes the operational parameter of signal lines from intermittent drive states to continuous drive states, which fundamentally alters how crosstalk is managed and eliminates the need for additional isolation components
2Productivity
If more signal lines are packed to increase density, then productivity is improved, but crosstalk between adjacent lines worsens
Solution Approach 1:
The patent maintains signal lines in a continuous drive state rather than allowing them to transition to high-impedance states, ensuring that the driving action is continuous and preventing crosstalk-induced transitions even in high-density configurations
Data Source
AI summary
The present disclosure provides a signal line structure, a signal line driving method, and a signal line circuit. The signal line structure includes a plurality of parallel signal lines, where each of the signal lines is maintained in a drive state at any time.