I3C Slave False Detection Avoidance via Time Slot Validation
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Solution Overview
Problem
In high-speed I3C communication systems, short pulses on signal lines can lead to erroneous detection of initiation or end of communication, causing unreliable communication due to the potential for false start or stop conditions.
Innovation Solution
A communication apparatus and method that includes a detection unit for signaling level changes and a false detection avoidance unit, which invalidates detection signals during specific time slots set in advance to prevent false detection of communication initiation or end, thereby avoiding short pulse errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a detection unit continuously monitors signal line level changes to detect communication initiation or end, then detection capability is improved, but false detection due to short pulses increases
Solution Approach 1:
The false detection avoidance unit pre-establishes a time slot validation mechanism before detection signals are processed. When a level change is detected, the system checks whether the detection occurs within a predetermined time slot that is unlikely to contain short pulses. This preliminary temporal filtering prevents false detections before they can affect communication reliability, while still allowing accurate detection of legitimate communication initiation or end events.
2Productivity
If communication speed is increased to achieve high-speed I3C, then productivity is improved, but susceptibility to short pulse interference increases
Solution Approach 1:
The false detection avoidance unit acts as an intermediary between the high-speed communication interface and the detection unit. It introduces a temporal validation layer that mediates the raw detection signals, filtering out false detections caused by short pulses that are more likely to occur at higher communication speeds. This intermediary mechanism enables the system to maintain high communication speed while preserving reliability through intelligent signal validation.
Data Source
AI summary
The present disclosure relates to a communication apparatus, a communication method, a program, and a communication system that enable more reliable communication.A bus IF is constituted by a master having an initiative of communication and a slave that communicates with the master under the control of the master. Additionally, the slave is provided with a detection unit that, when detecting a change in level of a signal line representing a declaration of initiation or end of communication by the master, outputs a detection signal indicating that the change in level of the signal line representing a declaration of initiation or end of communication has been detected, and a false detection avoidance unit that invalidates output of the detection signal during a specific time slot set in advance. The present technology can be applied to, for example, a bus IF that performs communication in conformity with the I3C standard.