Orientation Indicating Connector Debug Mode Signal Alteration
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Solution Overview
Problem
Existing techniques for detecting the orientation of all-in-one ports, such as USB Type-C connectors, face challenges during debug mode as they often provide the same signal on both configuration pins, making orientation detection unreliable, especially when entering debug accessory mode.
Innovation Solution
The proposed solution involves configuring the target system to enter a debug accessory mode by detecting signals on both configuration pins and altering one of the signals to provide an orientation indication, which is then received by the debug test system's multiplexer, allowing for accurate orientation detection without initializing software and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the same signal is provided on both configuration pins to enter debug accessory mode, then debug mode entry is enabled, but orientation detection becomes unreliable
Solution Approach 1:
The configuration pin signals are segmented into two functional groups: pins used for debug mode entry (accessory mode) and pins used for orientation detection. The system detects which specific pins are connected and uses this pin assignment information to determine orientation, allowing simultaneous achievement of debug mode entry and reliable orientation detection without requiring different signal levels on both pins.
2Measurement precision
If traditional orientation detection methods are used, then orientation indication is provided, but software initialization is required which increases complexity
Solution Approach 1:
The system performs orientation detection automatically during hardware initialization before software runs. The logic circuit detects the configuration pin signal assignments and determines orientation purely through hardware-level signal detection and logic operations, eliminating the need for software initialization to establish orientation. The system self-determines its orientation state during power-up or connection establishment.
3Measurement precision
If software initialization is required for orientation detection, then accurate orientation can be determined, but manufacturing costs and time increase
Solution Approach 1:
Orientation detection is performed as a preliminary hardware-level action during system startup or connection establishment, before software initialization occurs. The logic circuit evaluates configuration pin assignments and determines orientation in the hardware domain during early initialization phases, completing orientation detection before the operating system or application software needs to access orientation information, thereby reducing overall initialization time.
Data Source
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AI summary
Techniques described herein include a method, system, and apparatus for detecting an orientation configuration. For example, an apparatus having an all-in-one port may include a first configuration pin and a second configuration pin. The apparatus may also include logic configured to enter into an accessory mode based on a presence of a first signal on the first configuration pin and a second signal on the second configuration pin. The logic may be further configured to provide an orientation indication by altering the first signal on the first configuration pin.