Connecting the XJLink to the circuit

In addition to setting up the pin mapping for your XJLink, and configuring any external hardware in your circuit, you should also tell XJTAG how the XJLink is connected to the UUT.

Giving this information allows XJTAG to use its connections to the UUT during the connection test and in XJEase testing - any pin that is configured in the pin mapping as a PIO pin is then available to drive the net it is connected to. Because the XJLink pins are then treated as part of the circuit, you do not need to do anything explicit to enable this in your test device files - the system will use them as required.

Connections from the XJLink are configured on the Connections screen in XJDeveloper. As well as connecting signal pins, make sure you configure (and physically actually connect) ground pin connections too.

Adding connections for the JTAG signals will also improve messages that are output by XJTAG during testing.

PIO pins can be used in conjunction with JTAG TAP pins during testing, or can also be used even when there are no JTAG devices on the UUT to carry out testing.

Connections from External hardware to the UUT are not added on the Connections screen - they are part of the external hardware setup on the Boards screen.