Description
The XJTAG XJLink-PF40 JTAG Controller is a versatile, portable, and electrically robust test controller designed for engineers who need a reliable, high-speed connection between their test system and Unit Under Test (UUT). Featuring 40 user-definable I/O pins and the ability to run up to eight JTAG chains simultaneously, the XJLink-PF40 is the perfect solution for advanced boundary-scan testing, flash programming, and production-line diagnostics.
High-Speed and Flexible Testing
With support for TCK clock frequencies up to 166 MHz, the XJLink-PF40 enables fast and efficient test execution. Each of the eight TAP chains can run at different frequencies, ensuring slower devices do not hold back faster ones. Automatic signal skew control further enhances test reliability, even across long ribbon cables.
Rugged and Portable Design
Built for both lab and industrial environments, the controller is housed in a durable extruded aluminium casing that resists physical damage while providing easy mounting options. Its compact form factor, combined with USB bus power, makes it ideal for use on the bench, in production systems, or even in the field.
Configurable JTAG Interface
Since no universal JTAG header standard exists, the XJLink-PF40’s connectors are fully software-configurable. Engineers can quickly adapt pin-outs to suit different boards, while spare pins can be reassigned as digital I/O for triggering, status output, or custom functions. Four independent programmable voltage levels (1.2 V to 3.3 V) ensure compatibility with a wide range of devices.
Advanced Measurement Features
The XJLink-PF40 incorporates a built-in voltmeter and frequency counter across all pins. It supports input voltage measurement from 0 to 3.3 V and frequency measurements from 1 Hz up to 200 MHz, with selectable measurement periods. Visual indicators provide immediate feedback on test status.
Reliable and Secure Licensing
Each unit comes with a self-contained licence, giving users the freedom to install XJTAG software across multiple PCs. This flexibility allows test systems to move easily between locations without being tied to a single machine, streamlining deployment across teams and projects.
The XJLink-PF40 JTAG Controller is more than just a test interface — it is a powerful, portable, and adaptable solution that ensures fast, accurate, and flexible board testing wherever it is needed.
Technical Specifications – XJLink-PF40
| Feature | Specification |
| Interface Type | USB-C to JTAG Controller |
| I/O Connections | 40 user-definable pins |
| Supported TAP Chains | Up to 8, with configurable independent frequencies |
| Voltage Levels | 1.2 V to 3.3 V, adjustable in 0.1 V steps |
| Electrical Protection | ±30 V input protection on all pins |
| Max TCK Frequency | 166 MHz |
| Voltmeter Range | 0 – 3.3 V (all I/O pins) |
| Frequency Counter | 1 Hz to 200 MHz on all pins |
| Measurement Periods | 1 ms, 10 ms, 50 ms, 100 ms, 500 ms, 1 s, 5 s, 10 s |
| Connector | USB 2.0, locking Type-C |
| Power Supply | USB bus-powered (no external PSU required) |
| Casing | Extruded aluminium, robust and mountable |
| Special Features | Configurable pin-out, auto-skew control, SWD support, visual test indicators |
| Licence | Self-contained, transferable across PCs |
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