Connection Interface Conversion Chip USB DP Signal Routing
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Solution Overview
Problem
Existing connection interface conversion devices struggle to efficiently process signals between USB and DP interfaces, particularly when operating in different modes such as USB 3.2 ALT mode and USB 4.0 tunneling protocol, due to the complexity and varying bandwidth requirements.
Innovation Solution
A connection interface conversion chip with a USB interface circuit, a DP interface circuit, a USB core circuit, and a switching circuit that supports specific conduction modes, allowing for seamless transmission of DP signals between USB and DP interfaces, and decodes USB 4.0 signals to extract DP data, thereby reducing processing complexity and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a switching circuit is configured to support multiple conduction modes for both USB 3.2 ALT mode and USB 4.0 tunneling protocol, then the adaptability of the conversion chip is improved, but the device complexity and cost increase
Solution Approach 1:
The patent divides the conversion chip into distinct functional modules: a first conversion module dedicated to USB 3.2 ALT mode and a second conversion module dedicated to USB 4.0 tunneling protocol. Each module is independently configured and activated based on the operating mode, avoiding the need for a single complex switching circuit to handle all modes. This segmentation reduces overall circuit complexity while maintaining multi-mode compatibility.
Solution Approach 2:
The patent implements dynamic mode selection where the conversion chip can switch between different operational states based on the detected protocol type. A mode selection circuit dynamically activates either the first conversion module or the second conversion module depending on whether USB 3.2 ALT mode or USB 4.0 tunneling protocol is detected, allowing the system to adapt its complexity to the actual operational requirements.
2Adaptability or versatility
If a switching circuit is designed to handle both USB 3.2 ALT mode and USB 4.0 signals, then the versatility is improved, but the manufacturing cost increases
Solution Approach 1:
The conversion chip is manufactured with segmented functional modules where the first conversion module and second conversion module are distinct circuit blocks. This segmentation allows for optimized manufacturing of each module independently, reducing overall production costs compared to manufacturing a single complex switching circuit capable of handling all modes.
Solution Approach 2:
Different parts of the conversion chip have specialized configurations optimized for specific modes. The first conversion module is locally optimized for USB 3.2 ALT mode with its specific pin assignments and signal routing, while the second conversion module is locally optimized for USB 4.0 tunneling protocol. This local optimization reduces manufacturing complexity and cost for each module while maintaining overall versatility.
Data Source
AI summary
A connection interface conversion chip, a connection interface conversion device and an operation method are provided. The connection interface conversion chip includes a USB interface circuit, a DP interface circuit, a USB core circuit and a switching circuit. The USB interface circuit is suitable for coupling to a USB connector. The DP interface circuit is coupled to a DP sink device through a DP connector. The USB core circuit is coupled to both the USB interface circuit and the DP interface circuit. The switching circuit is coupled to both the USB interface circuit and the DP interface circuit. The switching circuit supports only one specific conduction mode that only allows transmitting DP signals between the USB interface circuit and the DP interface circuit.