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Finding Information using Explorer and Viewers

XJDeveloper comes with various methods to display information about the circuits in your test project. For example, right-clicking on a reference to a pin, device, or net on one of XJDeveloper's screens will open a context menu with options to display the item on the schematic (if a searchable PDF was included in the project), on the PCB layout (if ODB++ was used as the netlist format), or in Explorer.

Explorer provides a way to find details about the pins, devices, and nets in the circuit, and how they're interconnected. It will show you whether a net has a disable value or a constant pin set on it that is preventing the net being automatically tested during the connection test, and whether a JTAG device can drive or read the different points in the circuit.

Several situations can arise when it can be helpful to use Explorer to check this kind of information:

  • When categorising power and ground nets, XJDeveloper may propose a net that hasn't been labelled on the schematic and so can't easily be found. You can use Explorer as a way to locate the net and display it in Schematic Viewer.
  • When categorising a device, knowing the level of boundary scan access to its pins can help you determine what can be tested. Explorer can show you that information.
  • As part of developing a boundary scan test, it is good practice to use XJDeveloper's Test Coverage screen to identify any parts of the circuit that Connection Test has left untested. If you find something that is not covered when you thought it should have been, Explorer will provide a way to investigate the reason.

In this chapter, you will learn how to use Explorer, Schematic Viewer, and Layout Viewer, and see some examples of typical usage. Topics covered include: