Protocol Bridge Circuit for Through-Output Bus Communication
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Solution Overview
Problem
Semiconductor devices with different communication protocols face challenges in being integrated into a single communication system, leading to incompatibility and difficulty in performing Write and Read operations effectively.
Innovation Solution
The implementation of additional CAN transceivers between the semiconductor device and devices with different protocols, along with internal receiving and transmitting sections, allows for bridging protocols by through-outputting data and maintaining signal levels to avoid conflicts, enabling seamless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional CAN transceivers are added to enable communication between devices with different protocols, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent introduces a bridge device as an intermediary component that mediates communication between devices using different protocols. The bridge device includes receiving and transmitting sections that convert data between different communication protocols, enabling devices with incompatible protocols to communicate without requiring each device to support multiple protocols directly. This resolves the technical contradiction by improving protocol compatibility through the intermediary bridge device while avoiding the need to increase the complexity of individual devices.
2Productivity
If through-output mode is used to transmit data between different protocols, then communication efficiency is improved, but signal interference may occur
Solution Approach 1:
The bridge device acts as an intermediary that receives data from one protocol, processes and converts it, then transmits it through the appropriate transceiver using the target protocol. This mediation process ensures that data transmission is efficient while preventing signal interference by properly managing signal levels and protocol conversions in the intermediate stage rather than allowing direct conflict between different protocol signals.
Solution Approach 2:
The transmitting section of the bridge device proactively manages signal levels before data transmission occurs. When data needs to be transmitted through a transceiver, the transmitting section first sets the signal level to recessive (logic high) to prevent conflicts with reception data, then transmits the converted data. This preliminary action prevents signal interference before it can occur, resolving the contradiction between transmission efficiency and signal interference prevention.
Data Source
AI summary
In a semiconductor device, a first receiving section and a first transmitting section are configured to through-output data for a first device included in reception data from a second output terminal when bridge selection data included in the reception data indicates an on state of a through-output in which bit data is output as is; a second transmitting section keeps a signal level of a first output terminal so that a signal of a first bus, which a first transmitting/receiving device uses to receive the reception data from a transmitting device, becomes recessive when the through-output is being performed.