This article outlines the camera pin layout used in NVIDIA Jetson boards, explaining how to connect MIPI CSI-2 cameras via 15-pin and 22-pin connectors. It covers signal types, connector differences, and essential considerations for correct setup and stable system behavior.
Introduction
NVIDIA Jetson camera pinout platforms are widely adopted for embedded vision systems and edge computing projects. These boards use MIPI CSI-2 interfaces to connect camera modules. For developers, getting the pinout right is crucial to ensure stable communication between the Jetson board and the camera. This article breaks down how the pin layout works and what to keep in mind when connecting a camera.
Camera Connectors on Jetson Boards
Jetson boards such as the Nano, Xavier NX, and Orin Nano support different camera connector types. The most common are the 15-pin and 22-pin MIPI CSI connectors. These carry various signals including power, data lanes, control lines, and clock signals needed for camera operation.
Comparison: 15-Pin vs. 22-Pin Connectors
The 15-pin connector is typically used in Jetson Nano Developer Kits and provides basic dual-lane MIPI support. The 22-pin connector, seen in newer models like the Xavier NX and Orin Nano, offers extended support for more data lanes and control features. This is useful when working with advanced or multiple camera systems.
Signal Categories in the Pinout
Each pin in the CSI connector plays a specific role. The key signal types include:
Power Output: Supplies voltage (commonly 3.3V or 1.8V) to the camera module.
Ground: Maintains electrical stability in the circuit.
MIPI Data Lines: Carry image data to the Jetson processor.
Clock Signal: Keeps data transfer synchronized.
I2C Lines: Used for communication between the processor and camera for control tasks.
Reset/Enable Pins: Help control camera states like power-up or shutdown.
Correct wiring of each of these signals is vital for proper camera operation.
Use of Adapter Boards
To match varying pin configurations between boards and camera modules, adapter boards are often required. For example, some developers use a 22-pin to dual 15-pin board when working with two cameras on a Xavier NX. Before connecting, it's important to verify the pin mapping and power specifications to avoid any damage.
Why Pin Mapping Matters
Incorrect connections can result in power issues, signal loss, or failure to detect the camera. Voltage mismatches can damage components. Always refer to official hardware documentation and schematics before making connections. Testing with a multimeter or signal tracer can also help confirm connections.
Conclusion
The pin configuration on NVIDIA Jetson camera pinout boards is a critical part of setting up any camera-based project. Whether the goal is image classification, object tracking, or sensor fusion, correct pin usage ensures the hardware functions reliably. Careful planning during the setup phase reduces troubleshooting and keeps projects on schedule.
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