Termination Voltage Control for High-Speed Data Line Impedance
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Solution Overview
Problem
In high-speed electronic systems, impedance mismatch between components leads to unreliable signal transmission, especially as signal swing widths decrease with increased speed and reduced power consumption, necessitating effective impedance matching for precise communication.
Innovation Solution
The system incorporates a data transmission unit that drives data transmission lines to a termination voltage level using termination resistors and a termination voltage control unit, enabling pull-up and pull-down signals in response to a preamble control signal, ensuring impedance matching and stable voltage levels during data strobe signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If signal swing width is reduced to decrease power consumption, then power consumption is reduced, but signal transmission reliability deteriorates
Solution Approach 1:
The patent changes the voltage level parameter by introducing a termination voltage control unit that adjusts the voltage level on the data transmission line to match the termination voltage. This parameter change allows the system to maintain signal integrity with reduced swing widths, thereby reducing power consumption while preserving transmission reliability.
Solution Approach 2:
The patent introduces a termination voltage control unit as an intermediary component between the data transmission unit and the data reception unit. This intermediary actively manages the voltage level on the transmission line, ensuring proper impedance matching and signal level alignment, which maintains reliability even with reduced signal swing.
2Productivity
If interface circuit bandwidth is increased to improve performance, then performance is improved, but power consumption increases
Solution Approach 1:
The patent applies preliminary action by establishing the termination voltage level before actual data transmission begins. The termination voltage control unit pre-configures the voltage levels on the transmission lines during a setup period, ensuring that when data transmission starts, the lines are already properly biased. This preliminary configuration enables high-speed operation without requiring excessive power during the actual data transfer.
3Measurement precision
If impedance matching is improved to ensure precise transmission, then transmission precision is improved, but device complexity increases
Solution Approach 1:
The patent merges the termination resistor function with the voltage control function into a single integrated solution. The termination voltage control unit combines the roles of voltage regulation and impedance matching management, eliminating the need for separate complex impedance matching circuits while achieving precise transmission.
Data Source
AI summary
A system includes a data transmission unit, a termination resistor and a data reception unit. The data transmission unit may drive a data transmission line based on data, and drive the data transmission line to a voltage level corresponding to a termination voltage during a specified operation period. The termination resistor may be coupled between the data transmission line and a termination node. The data reception unit may receive a signal transmitted through the data transmission line.