Hello
What is correct, that a programmer by JTAG provides supply voltage for pins 1 and/or 2, or that it receives supply voltage for any of those pins?
I have been connecting my RT1020 and RT1050 evaluation boards, with Jlink SEGGER and Multilink PE micro. The Jlink gives 3.3 volts for the pins 1 and 2 of JTAG, whereas the Multilink does not give voltage for any of those pins.
The problem is that when I have connect the Jlink to the evaluation board RT1020, at first it worked, but when I have press the SW5 button on the board, which I think is to do a RESET, the board has stopped working, and now it has shorted the pin 2 (JTAG_PWR) with GND of the JTAG connector.
According to the diagrams, of the 4 push buttons, SW4 is for user applications, SW2 (ONOFF) is for RESET directly to the microcontroller, and only the SW5 and SW3 buttons act by doing some type of reset, I do not understand why so many reset buttons.
SW5 goes to an NTSX2102 chip, which is a bidirectional voltage converter, and SW3 goes to a UM805 chip, which is a voltage monitor with manual reset option.
In the board that I have with the RT1050, I have not yet pressed any button, and I'm afraid to press any (SW3-SW5), using the programmers by JTAG, at least with the Jlink that is the one that gives 3.3v voltage for the pins 1 and 2 of JTAG.