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RTOS/CC1310: CC1310 Shielding HIB mode

user5103581
Prodigy 30 points
Part Number: CC1310

Tool/software: TI-RTOS

Found a fatal problem with the CC1310. Questions are as follows:

When the TCK interface in the JTAG interface of the CC1310 is interfered, the CC1310 can easily enter the HIB mode. At this point, the chip must be restored by PIN-RESET and power down. TI officials did not provide a way to shield the HIB mode.

The method of connecting the pull-up resistors provided in the user manual does not completely avoid interference. Therefore, during the use of CC1310, when the software is reset, CC1310 may enter HIB mode, resulting in the chip not working properly.

Will TI use TI for shielding HIB or how to solve it?

  • 0
    TI__Guru** 106705 points
    Hi,

    One solution to this is to use a 0-ohm resistor to tie TCK to VDDS. This require that you use the ROM bootloader interface to do your production programming.

    If the CC1310 is communicating with another MCU in your system, the other MCU can reset the CC1310 should the issue be triggered. A similar, but slightly more exotic solution is to connect the reset pin to one of the CC1310 IOs and make it reset itself should the JTAG PowerDomain be enabled (indicate the the TCK has toggled).

    Keep in mind that if you face this issue it means that you TCK line is susceptible to noise somehow. Re-designing the PCB with this in mind will most likely resolve the issue.

    Cheers,
    Fredrik