Introduction
The ALINX AN5641 is a high-performance 5-megapixel MIPI camera module featuring the OmniVision OV5640 CMOS image sensor. Designed for integration with FPGA development boards, this module enables image transmission via the MIPI interface. It supports various image formats and resolutions, offering features like manual focus, automatic exposure control (AEC), and automatic white balance (AWB). This manual provides essential information for setting up, operating, and maintaining your AN5641 camera module.
Specifications
The ALINX AN5641 camera module offers the following technical specifications:
| Parameter | Description |
|---|---|
| Interface | MIPI interface |
| Pixel | 5 megapixel |
| Photosensitive Chip | OV5640 |
| Sensitive Size | 1/4" |
| Lens Parameters | 5MP/M12 Interface, Focal Length 0.14 inch, Monitoring angle 80-96 degrees |
| Module Content | With OV5640 Chip Power Supply Circuit |
| Function Support | Manual Focus, Automatic Exposure Control (AEC), Automatic White Balance (AWB) |
| Image Format | RAW RGB, RGB565/555/444, CCIR656, YUV422/420, YCbCr422 and compression |
| Capture Screen Resolutions | QSXGA (2592x1944), 1080p, 1280x960, VGA (640x480), QVGA (320x240) |
| Working Temperature | -30~70°C (stable operation 0~50°C) |
| Accessory Type | Camera Module |
Setup Instructions
Follow these steps to properly set up your ALINX AN5641 camera module with a compatible FPGA development board.
- Prepare the FPGA Board: Ensure your FPGA development board (e.g., AX7Z020, AX7Z035, AX7Z100, AXU3EG, AXU4EV-E 5EV-E -P) is powered off and configured for MIPI camera input. Refer to your FPGA board's documentation for specific MIPI interface setup.
- Connect the Camera Module: Carefully connect the FPC (Flexible Printed Circuit) cable from the AN5641 camera module to the designated MIPI CSI (Camera Serial Interface) connector on your FPGA board. Ensure the cable is inserted correctly and securely, observing the orientation.
- Pin Assignment Reference: For detailed electrical connections, consult the pin assignment diagram for the camera module's connector. This is crucial for custom integrations or troubleshooting connection issues.
- Power On: Once the camera module is securely connected, power on your FPGA development board.
- Software Configuration: Load the appropriate FPGA bitstream and software drivers for the OV5640 sensor onto your development board. This software will handle the MIPI interface communication and image processing.
Operating Instructions
After successful setup and software configuration, you can begin operating the camera module:
- Initialize Camera: Use your FPGA's software interface or SDK to initialize the OV5640 camera sensor. This typically involves setting up registers and configuring the MIPI interface.
- Configure Image Parameters: Adjust parameters such as resolution, frame rate, exposure, and white balance through the software. The AN5641 supports manual focus, automatic exposure control (AEC), and automatic white balance (AWB).
- Capture Images/Video: Initiate image or video capture through your software application. The module will transmit data via the MIPI interface to the FPGA for processing and display.
- Lens Adjustment: If manual focus is required, carefully rotate the lens barrel to achieve the desired sharpness for your application.
Maintenance
- Cleaning: Keep the lens clean from dust and smudges. Use a soft, lint-free cloth specifically designed for optical surfaces. Avoid abrasive materials or harsh chemicals.
- Handling: Handle the camera module by its edges to avoid touching the lens or the sensitive electronic components on the PCB.
- Storage: When not in use, store the module in an anti-static bag in a dry, dust-free environment within the recommended storage temperature range.
- Environmental Conditions: Operate the module within the specified working temperature range (0~50°C for stable operation) and avoid high humidity or corrosive environments.
Troubleshooting
- No Image/Black Screen:
- Check FPC cable connection: Ensure it is securely and correctly inserted into both the camera module and the FPGA board.
- Verify power supply: Confirm the FPGA board is powered on and providing the necessary voltage to the camera module.
- Software/Driver issues: Ensure the correct FPGA bitstream and camera drivers are loaded and initialized. Check for any error messages in your software console.
- Lens cap: Confirm the lens cap (if any) has been removed.
- Distorted/Corrupted Image:
- Check MIPI clock and data lines: Ensure signal integrity.
- Software configuration: Verify image format, resolution, and timing parameters are correctly set in your software.
- Cable quality: A damaged FPC cable can cause data corruption. Try replacing it if possible.
- Poor Image Quality (Blurry, Dark, Overexposed):
- Focus adjustment: If using manual focus, adjust the lens barrel until the image is sharp.
- Exposure settings: Adjust AEC or manual exposure settings to brighten or darken the image appropriately for ambient light conditions.
- White balance: Adjust AWB or manual white balance settings to correct color casts.
- Lens cleanliness: Clean the lens if it is smudged or dusty.
User Tips
- Start with Example Projects: If available, begin with official ALINX example projects for your specific FPGA board. These provide a verified starting point for MIPI camera integration.
- Consult FPGA Documentation: Always refer to the documentation for your FPGA development board for specific MIPI CSI connector details and power requirements.
- Environmental Control: For optimal performance and longevity, operate the camera module in a controlled environment, avoiding extreme temperatures or humidity.
Warranty and Support
ALINX provides technical support for its products. For assistance with your AN5641 camera module, please refer to the official ALINX website or contact their customer support. Keep your purchase records for warranty claims. Specific warranty terms and conditions may vary and are typically outlined at the point of purchase or on the manufacturer's official support channels.
