Staggered Driver Signal Transmission Circuit for Low-Reflection Links
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In integrated circuits, particularly those with high power consumption restrictions like mobile devices, the use of termination resistors coupled to the receiving stage leads to high power consumption due to direct current flow, making it difficult to implement effective signal reflection suppression.
Innovation Solution
A signal transmission circuit design that includes multiple drivers with controlled electrical resistance, where the number and timing of driver activations are adjusted to match the impedance of the transmission channel, reducing peak current flow and power consumption by dispersing the points of time for signal driving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a termination resistor is electrically coupled to a receiving stage to suppress signal reflection, then signal reflection is suppressed, but direct current flows through the termination resistor causing high power consumption
Solution Approach 1:
The patent applies dynamics by making the termination resistor controllable rather than fixed. A switch element is introduced to dynamically connect or disconnect the termination resistor based on operational requirements, allowing the system to suppress signal reflection only when needed while reducing power consumption during normal operation.
Solution Approach 2:
The patent changes the resistance parameter dynamically by introducing a controllable switch element that can alter the electrical state of the termination resistor. This allows the resistance to transition between connected and disconnected states, enabling the system to adapt between signal reflection suppression and power consumption reduction modes.
2Productivity
If multiple drivers are activated simultaneously to drive transmission signals, then signal transmission capability is improved, but peak current flow increases
Solution Approach 1:
The patent applies periodic action by sequentially activating drivers rather than simultaneously. The control circuit activates drivers in a staggered manner with different timing, ensuring that not all drivers switch at the same time. This sequential activation maintains signal transmission capability while distributing the current demand over time, thereby reducing peak current flow.
Solution Approach 2:
The patent uses dynamics by implementing time-dependent control of driver activation. The control circuit dynamically adjusts the activation timing of each driver based on predefined schedules or signal conditions, creating a dynamic activation pattern that balances transmission capability with current management.
Data Source
AI summary
A signal transmission circuit includes a first selection driver configured to generate a first drive signal in response to an input signal and a first selection signal and drive a transmission signal in response to the first drive signal, and a second selection driver configured to delay the input signal by a first delay time to generate a first delay signal. The second selection driver generates a second drive signal in response to the first delay signal and a second selection signal, generates a first code signal in response to the input signal and the second selection signal, and drives the transmission signal in response to the second drive signal and the first code signal.