XJTAG version 3.4
A new major version of XJTAG – version 3.4 – is now available from our website for users who are in maintenance. […]
Categorising Transistors in XJDeveloper
Transistors are one of the things we get asked about quite a bit: “How should I categorise the transistors in my project?” […]
Making the BSDL library more useful
If you use the BSDL library, a new option will now appear (from XJTAG version 3.3.7) when you categorise a JTAG device in XJDeveloper by selecting it from the library - it will offer to copy the BSDL file into another folder (defaulting to your local project directory). It is up to you whether to [...]
DDR4 support in XJTAG
We have been starting to see questions about support for DDR4 SDRAM devices, which are gradually becoming available. We have published a guide to using JTAG to test DDR4 memory on the XJTAG website. It contains a link to slides used at a recent presentation on the subject. Support for DDR4 devices will be coming soon [...]
Terminations to a reference voltage in XJTAG
This post is to clarify how to specify terminations to a reference voltage in XJTAG. There are two special classes of passive device in XJTAG which represent termination resistors. […]
1149.6 testing in XJTAG
1149.6 testing is coming of age, and though XJTAG has supported IEEE Std. 1149.6 since software version 2.1 (released in 2008) it seems to us that 1149.6 devices are becoming much more common in the last couple of years. […]
Improving Connection test errors around terminated nets
When helping our customers to understand errors that Connection Test has discovered, we sometimes realise that XJTAG has the information the customer needs, if we were only to display a little more output. […]
Differential Terminations in XJTAG
This post is to try to clarify what XJTAG understands by the term “differential termination”. […]
Driving differential pins in XJEase
A few people have asked us how to deal with differential pins when writing XJEase tests. They see them change value on an oscilloscope during the Connection Test, but aren’t sure how to deal with them explicitly in .xje files. […]