USB Hub IC Integrating Dual Physical Layers for Type-C Reversibility
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Solution Overview
Problem
Existing USB hubs struggle to effectively handle the new USB Type-C connectors, which require reversible connectivity and higher performance standards, while maintaining compatibility with USB 3.1 and USB 2.0 technologies, and existing solutions often necessitate external switching circuitry and additional pins, increasing complexity and cost.
Innovation Solution
A USB hub integrated circuit device with dual physical layers for each port, controlled by an embedded controller and multiplexers, which selects the appropriate physical layer based on insertion direction and CC signal conditions, eliminating the need for external switches and reducing pin count, ensuring correct bi-directional channel connection regardless of plug orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If external switching circuitry is used to handle USB Type-C connectors, then reversible connectivity is achieved, but device complexity and pin count increase
Solution Approach 1:
The patent merges the switching circuitry functionality directly into the USB hub integrated circuit device, eliminating the need for external switches. The hub logic includes integrated switching means that automatically select appropriate transmission channels based on connector orientation, thereby reducing device complexity while maintaining reversible connectivity support.
Solution Approach 2:
The USB hub integrated circuit device is designed with multi-functional capability to handle both USB Type-C and traditional connectors through a single device. The hub logic can automatically detect connector type and orientation, then route signals appropriately through integrated physical layers, making the device universal without requiring additional external components.
2Reliability
If external switching circuitry is used for USB Type-C connectors, then bi-directional channel connection is ensured, but production cost increases
Solution Approach 1:
By integrating switching functionality within the hub IC device, the patent eliminates the need for separate external switches, reducing component count and assembly steps. This integration directly lowers production costs while ensuring reliable bi-directional channel connections through the hub's internal routing logic.
3Reliability
If external switching circuitry is used for USB Type-C connectors, then correct channel selection is achieved, but power consumption increases
Solution Approach 1:
The patent combines switching control functionality within the hub IC device, eliminating external switches that would consume additional power. The integrated switching means are controlled by the hub logic using minimal power, automatically selecting appropriate transmission channels based on connector orientation without the overhead of external switching components.
4Adaptability or versatility
If dual physical layers are provided for each port, then reversible connectivity is supported, but manufacturing complexity increases
Solution Approach 1:
The patent integrates dual physical layers and switching functionality within a single USB hub IC device, eliminating the need for external switching components and reducing assembly steps. This integration simplifies manufacturing by reducing component count while maintaining support for reversible connectivity through automatic channel selection.
Data Source
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AI summary
A USB hub integrated circuit device, comprising USB hub logic comprising a plurality USB ports, wherein at least one port comprises a pair of bi-directional transmission channels, wherein for the at least one port two physical layers are provided in parallel, each physical layer being associated with one bidirectional transmission channel, wherein the USB hub logic is further configured to select one of said physical layers for each port depending on a logic condition.