Quite often at least a few of these test points are the common JTAG / IEEE 1149.1 interface. JTAG interfaces have 5 basic pins: TDI (Test Data In), TDO (Test Data Out), TCK (Test Clock), and ...

A few weeks ago we wrote about our Bus Pirate universal serial interface tool. We used the recent holiday to add some new features, like a JTAG programmer, macros, frequency measurement ...

In fact, it defines network connectivity of instruments that have been interfaced through the WTAP/JTAG interface to communicate with JTAG TAP present at the chip-level. Let us understand the meaning ...

The ability to control debug logic power consumption in an industry standard way The introduction of a Star-4 (4 wire JTAG parallel interface to multiple TAPs) connectivity to complement the 1149.1 ...