Configuration of JTAG device modes
JTAG Device modes
JTAG devices have a certain number of modes, or Instructions in which they can operate. The effect of performing a JTAG read or write scan depends on the JTAG mode into which each device has been placed before performing the scan. Some modes are mandatory in all devices which support JTAG, others are optional. XJAnalyser supports 5 JTAG device modes, which are explained here:
Not all devices implement all of these instructions, and some will implement other instructions or user-defined instructions, which XJAnalyser does not support.
XJTAG v4.1.100