Introduction
The ALINX AL321 Platform Cable USB Blaster is a versatile programming and debugging tool specifically designed for XILINX FPGA (Field-Programmable Gate Array) chips. This device facilitates JTAG (Joint Test Action Group) program download, enabling users to configure and debug their FPGA designs efficiently. It supports universal interfaces, making it easy to integrate into various development environments.

Package Contents
Please verify that all items listed below are included in your package:
- ALINX AL321 USB Blaster (1 unit)
- 10-Pin 0.1-inch Spacing Cable (1 unit)
- USB Cable (1 unit)

Setup Instructions
The ALINX AL321 features reserved interfaces for direct connection without the need for additional conversion. It supports both 2.54mm spacing 10-pin and 2.0mm spacing 14-pin interfaces.
1. Pin Definitions
Understanding the pin definitions is crucial for correct connection to your XILINX FPGA board. The device provides standard JTAG pins (TCK, TDO, TMS, TDI), VREF, and GND connections.
1.1. 14-Pin Interface Pin Definition

The 14-pin interface provides the following connections:
| Pin | Function |
|---|---|
| 1 | GND |
| 2 | VREF (VCC3V3) |
| 3 | GND |
| 4 | FPGA_TMS |
| 5 | GND |
| 6 | FPGA_TCK |
| 7 | GND |
| 8 | FPGA_TDO |
| 9 | GND |
| 10 | FPGA_TDI |
| 11 | GND |
| 12 | NC (Not Connected) |
| 13 | GND |
| 14 | NC (Not Connected) |
1.2. 10-Pin Interface Pin Definition

The 10-pin interface provides the following connections:
| Pin | Function |
|---|---|
| 1 | VREF |
| 2 | FPGA_TCK |
| 3 | JTAG_TDO |
| 4 | GND |
| 5 | FPGA_TMS |
| 6 | GND |
| 7 | FPGA_TDI |
| 8 | GND |
| 9 | NC (Not Connected) |
| 10 | GND |
2. Connection Steps
- Connect to Computer: Plug one end of the provided USB cable into the ALINX AL321 USB Blaster and the other end into an available USB port on your computer. The "status" LED on the device should illuminate, indicating power.
- Connect to FPGA Board: Select the appropriate JTAG cable (10-pin or 14-pin) based on your FPGA development board's JTAG header. Connect one end of the JTAG cable to the ALINX AL321 and the other end to the JTAG header on your FPGA board, ensuring correct pin orientation (Pin 1 to Pin 1).
- Install Drivers (if necessary): Your operating system may automatically install necessary drivers. If not, refer to the ALINX website or XILINX documentation for driver installation instructions for Platform Cable USB Blaster devices.
- Software Setup: Open your XILINX FPGA development software (e.g., Vivado, ISE Design Suite). Configure the software to detect the ALINX AL321 as the JTAG programmer.

Operating Instructions
Once the ALINX AL321 is correctly connected and recognized by your development software, you can proceed with programming or debugging your XILINX FPGA.
- Launch Software: Open your XILINX FPGA development environment (e.g., Vivado, ISE).
- Detect Hardware: Use the hardware manager or equivalent tool within your software to detect the connected ALINX AL321 programmer. Ensure it is recognized without errors.
- Load Bitstream/Program: Load your compiled FPGA bitstream (.bit file) or other programming files into the software.
- Program Device: Initiate the programming process through the software. The ALINX AL321 will transfer the program data to your FPGA via the JTAG interface.
- Debugging: For debugging, use the software's debugging features (e.g., ChipScope, ILA) which will communicate with the FPGA through the AL321.
The "status" LED on the AL321 typically indicates power and activity during data transfer. A solid light usually means power is on, and blinking may indicate data transmission.
Maintenance
- Storage: Store the device and cables in a dry, dust-free environment when not in use.
- Cleaning: Use a soft, dry cloth to clean the device. Avoid using liquid cleaners or solvents.
- Handling: Handle the device and cables with care to prevent physical damage to connectors or the main unit.
- Cable Integrity: Regularly inspect the USB and JTAG cables for any signs of wear, fraying, or damage. Replace damaged cables immediately to ensure reliable operation.
Troubleshooting
- Device not recognized by computer:
- Ensure the USB cable is securely connected to both the AL321 and the computer.
- Try a different USB port on your computer.
- Verify that the necessary drivers are installed. Refer to XILINX or ALINX support resources for driver downloads.
- Test with a different USB cable if available.
- FPGA programming fails:
- Check the JTAG cable connection to both the AL321 and the FPGA board. Ensure correct pin orientation.
- Confirm that the FPGA board is powered on and correctly configured for JTAG programming.
- Verify that the correct FPGA device is selected in your development software.
- Consult the error messages provided by your XILINX development software for specific guidance.
- "status" LED not illuminating:
- Ensure the USB cable is properly connected and providing power.
- Try connecting to a different USB port or computer.
- If the issue persists, the device may be faulty.
Specifications
| Feature | Detail |
|---|---|
| Model Number | AL321 |
| Brand Name | ALINX |
| Type | Development Board (Programmer/Debugger) |
| DIY Supplies | ELECTRICAL |
| Compatible Equipment Style | Digital-to-Analog Converter (DAC) (Note: This is a general category; the device functions as an FPGA programmer.) |
| Origin | Mainland China |
| Package Dimensions (L x W x H) | 10 cm x 10 cm x 5 cm |
| Package Weight | 0.2 kg |
User Tips
No specific user tips were available from reviews or Q&A for this product. General advice for FPGA development includes:
- Always ensure your FPGA board is correctly powered before attempting to program it.
- Double-check JTAG pin connections to avoid damage to the programmer or FPGA.
- Keep your XILINX development software and drivers updated to the latest versions for optimal compatibility and performance.
Warranty and Support
For technical support, driver downloads, or warranty inquiries, please contact the seller or refer to the official ALINX website. Keep your purchase records handy for any support requests.





