CXPI Transmitter Data Segmentation for Automotive I/O Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing Clock Extension Peripheral Interface (CXPI) communication protocol faces challenges in efficiently transmitting large setting data for numerous I/O terminals in automotive systems, leading to increased data size and complexity in master-slave node communication.
Innovation Solution
A transmitter device is configured to send first setting data specifying input and output functions, comprising common and inherent data for all and individual terminals, using a CXPI communication system with a master node and slave nodes connected via a signal line, power line, and ground line, employing modulation techniques like pulse width modulation, and storing data in registers for efficient communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If setting data for each I/O terminal is transmitted individually, then complete configuration information is provided, but data size increases significantly
Solution Approach 1:
The setting data is segmented into two distinct parts: common setting data that applies to all I/O terminals, and individual setting data specific to each terminal. This segmentation allows the common portion to be transmitted once rather than repeated for each terminal, significantly reducing the total data size while maintaining complete configuration information.
Solution Approach 2:
The common setting data structure is designed to be universal across all I/O terminals in the slave node. By identifying and extracting settings that are identical or applicable to multiple terminals (such as communication parameters, timing settings, or functional configurations), the system achieves multi-functionality where a single data transmission serves multiple terminals, reducing redundant data transmission.
2Manufacturing precision
If individual setting data is transmitted for each terminal, then precise terminal configuration is achieved, but communication complexity increases
Solution Approach 1:
The communication protocol is segmented into two distinct transmission phases: first transmitting common setting data applicable to all terminals, then transmitting individual setting data for each terminal. This segmentation organizes the communication flow, making it more structured and easier to manage despite the presence of multiple terminals, thereby reducing perceived complexity while maintaining precision.
Solution Approach 2:
The common setting data is transmitted and established as a preliminary step before individual terminal configurations are sent. This preliminary action creates a foundation of shared parameters and settings that simplifies subsequent individual terminal configurations, as terminals can inherit common settings rather than requiring complete individual specification, thus reducing overall communication complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces the data amount transmitted by categorizing setting data into common and inherent terminal data, allowing flexible responses to varying numbers of terminals, thereby enhancing efficient data communication and facilitating I/O settings in automotive systems.
Implementation Method 1
employing modulation techniques like pulse width modulation
Implementation Method 2
employing modulation techniques like pulse width modulation
Data Source
Figure 1
Figure 2
Figure 3
AI summary
According to one embodiment, a transmitter device is configured to transmit to a receiver device including input and output terminals (P00, P01, P02) first setting data specifying input and output functions of the input and output terminals (P00, P01, P02). The first setting data comprises first data common to the input and output terminals (P00, P01, P02) and second data inherent to each of the input and output terminals (P00, P01, P02).