XJQuad – Multiport JTAG Tester

XJTAG XJQuad JTAG controller / test controller

Overview
Benefits
Features
Details

XJQuad is a 4-port version of the XJLink2 USB-to-JTAG controller targeted at PCB manufacturers. With a range of special features it is particularly suitable for concurrent/parallel testing on the production line, running XJTAG projects created by XJDeveloper. Each of the four ports connects to a separate Unit Under Test (UUT) with its high-speed interface allowing control of up to four JTAG chains per UUT.

In one package, you have connection testing, in-system programming, non-JTAG device testing, serial number handling and configurable log files for your audit trail, ready to test up to four boards simultaneously.

Key Benefits

Convenient and cost-effective

Self-contained design for running tests on four circuits simultaneously

Flexible Testing Options

Testing can be started synchronously or independently on each UUT

Self-contained licences

So you can use the XJTAG system on multiple PCs

Features

Tests 4 boards simultaneously
Simple, controlled test execution
Up to 4 TAP connections to each of 4 UUTs
Configurable pin-out for any cable or board
TCK clock frequencies up to 166 MHz
Two different voltages can be configured, from 1.1 V to 3.3 V in 0.1 V steps
Button to start test
Visual indication of test status
High speed USB 2.0 interface
Adjustable JTAG signal termination
Spare pins on the JTAG connectors can be used in place of the button or to indicate the test status
Spare pins can also be used as general purpose I/O during testing, for example for fast Flash programming
Automatic signal skew control
Built in voltage meter on all I/O pins. Voltage input: Min 0, Max 5 V.
Frequency counter on all I/O pins. Frequency input: Min 1 Hz, Max 200 MHz.
Selectable measurement period of 1 ms, 10 ms, 100 ms, 1 s, 10 s
JTAG signals are +5 V tolerant

Configurable JTAG interface

The function of the I/O pins in the 20-way connectors of the XJQuad are configurable, allowing you to simplify your cable assemblies to match your PCB design. This ability to change the pin mapping for the JTAG signals simplifies the process of connecting your XJTAG test system to the Unit Under Test.

Flexible connectivity

XJQuad can be configured to work in the best way with your board. Configurable voltage levels allow you to connect directly to most TAPs while the advanced automatic skew control and variable signal termination settings enable you to get the maximum frequency with your JTAG chain and cabling.

Parallel testing

XJQuad gives you the flexibility of testing up to four boards simultaneously or using the ports independently by continually unplugging boards that have finished testing and plugging in new ones whilst tests are still running on the other ports.

Your test system where you want it

The XJQuad contains the licence for your XJTAG system. This allows you to easily move your licences around for maximum flexibility and that you are not tied to one PC to do your XJTAG testing.