USB Type-C CC Termination Detection With Voltage Tolerance
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Solution Overview
Problem
The existing systems for determining the mode of operation (host or device) of Type-C USB connectors lack voltage tolerance, leading to inefficiencies in communication and power management, particularly in dual-role devices that need to adapt based on configuration channel signals.
Innovation Solution
The implementation of voltage tolerant termination presence detection systems, which include sensor circuitry to determine the mode of operation and termination circuitry to bias the configuration channel accordingly, using pull-up, pull-down, and clamping circuitry to manage voltage levels and prevent overstress, ensuring reliable communication and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voltage tolerant termination presence detection is implemented, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent combines sensor circuitry and termination circuitry into a single integrated apparatus within the system-on-chip. The sensor circuitry and termination circuitry share common components and work together as a unified system to detect device presence and determine operational mode, reducing overall system complexity while maintaining voltage tolerance capabilities
Solution Approach 2:
The termination circuitry is designed to perform multiple functions: it provides pull-up resistance, pull-down resistance, and voltage clamping protection all within a single circuit block. This multi-functional design allows the system to handle various voltage conditions and device configurations without requiring separate dedicated circuits for each function
2Reliability
If voltage clamping circuitry is added to prevent overstress, then reliability is improved, but device complexity increases
Solution Approach 1:
The voltage clamping circuitry is integrated within the termination circuitry block rather than being a separate component. The clamping circuit shares the configuration channel connection and works in conjunction with the pull-up and pull-down circuitry, creating a unified protection system that prevents overstress without adding significant complexity to the overall device architecture
Data Source
AI summary
Apparatuses and methods associated with voltage tolerant termination presence detection for universal serial bus type-C connectors are disclosed herein. In embodiments, an apparatus to enable voltage tolerant termination presence detection may include sensor circuitry to determine whether a device coupled to the sensor circuitry is to operate in host mode or device mode based on a signal on a configuration channel between the device and the sensor circuitry. In embodiments, the apparatus may further include termination circuitry to bias the configuration channel in accordance with the host mode or the device mode based on the determination of whether the device is to operate in the host mode or the device mode. Other embodiments may be described and/or claimed.