Data Transmission Circuit with Dynamic Driver Control for Noise and Jitter
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Solution Overview
Problem
Conventional data transmission circuits face challenges in suppressing power supply noise while maintaining low power consumption, as they often require a dummy driver that doubles power consumption to cancel noise based on data patterns.
Innovation Solution
A data transmission circuit design that includes a first drive circuit for data synchronization, a second drive circuit for asynchronous data transitions, and an operation state control circuit to individually manage the operation states of both circuits, reducing power consumption by controlling the number of active drivers and current sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a dummy driver is used to cancel power supply noise, then power supply noise is suppressed, but power consumption is doubled and increased
Solution Approach 1:
The patent implements dynamic control of the dummy driver's operation state based on real-time detection of power supply noise levels and current data patterns. The dummy driver is activated only when noise cancellation is actually needed, rather than operating continuously. This dynamic adaptation allows the system to suppress power supply noise effectively while minimizing unnecessary power consumption during periods when the dummy driver is not required to operate.
Solution Approach 2:
The patent changes the operational parameters of the dummy driver by controlling its activation and deactivation states based on detected noise conditions and data patterns. By adjusting whether the dummy driver is active or inactive according to actual needs, the system optimizes the balance between noise suppression performance and power consumption, avoiding the continuous operation that would double power consumption.
2Reliability
If the dummy driver operates continuously to ensure noise cancellation, then jitter characteristic is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the dummy driver's operation state based on real-time monitoring of power supply noise levels and data transition patterns. The dummy driver is activated only during specific conditions where noise cancellation is beneficial for maintaining jitter characteristics, rather than operating continuously. This ensures jitter performance is maintained when needed while reducing power consumption during periods when the dummy driver can remain inactive.
Solution Approach 2:
The system uses feedback from noise detection circuits and data pattern analysis to automatically control the dummy driver's operation state. The dummy driver serves itself by being activated only when the system detects that noise cancellation is required, eliminating the need for continuous operation and thereby reducing power consumption while maintaining jitter characteristics when necessary.
Data Source
AI summary
Provided is a data transmission circuit that includes first and second drive circuits and an operation state control circuit. The first drive circuit drives first data that transitions or does not transition in synchronization with a clock signal. The second drive circuit drives second data that transitions at a timing when the first data does not transition in synchronization with the clock signal. The operation state control circuit individually controls operation states of the first and second drive circuits.