• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 31 subscribers
  • Views 924 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TM4C1294KCPDT: In the JTAG circuit of TI 14 pin, is there no problem even if the RST_n pin is not connected?

Keirs
Expert 2605 points
Part Number: TM4C1294KCPDT


Hello.

I have some questions.

Currently, I refer to the JTAG circuit diagram of the following document.

http://www.ti.com/lit/an/spma075/spma075.pdf

In the JTAG circuit of TI 14 pin, is there no problem even if the RST_n pin is not connected?

If yes, what signal does the device reset?

What pin of the TMC1294 should be connected to the signal of RST_N in the circuit diagram of TI 20 pin or ARM 10 pin?
Is a pull-up resistor etc. necessary?

Regards,

uchida-k

  • 0
    TI__Guru 72500 points

    The TI 14 pin JTAG connector does not have a connection to the RST_n pin. The  JTAG interface controls the Debug Access Port that can internally assert a system reset.

    On the TI 20 pin and ARM 10 pin JTAG connectors RST_N can be connected to pin 70 RST. I don't think this is used by CCS, but may be used by other debuggers.

    Yes a pull-up resistor is required for pin 70, RST.