• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 51 subscribers
  • Views 317 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.

CC2642R: Setting appropriate values to the VDDR_CAP in CCFG

Nona
Intellectual 1730 points
Part Number: CC2642R

Team,

My customer who has developed their own board employs the CC2642R is trying to find the appropriate setting of VDDR_CAP in CCFG.
They looked into our sample code in SDK. It sets 0x3A(=5.8uF) to this field. The launchPad uses a 22uF for VDDR decoupling capacitor. They want to know the reason for this setting.

Could I have your comment on this?

Regards,
Nonaka

  • 0
    TI__Guru**** 317180 points

    VDDR_CAP is not used as an parameter for CC2642R. In which SDK and which example etc did they find a reference to VDDR_CAP? 

  • 0 in reply to TER
    TI__Intellectual 1730 points

    Hi TER,
    Thanks for your reply.
    They looked into HostTest sample in SDK3.40. the "ccfg.c" which is included by "ti_devices_config.c".

    //////// SDK3.40\\source\ti\devices\cc13x2_cc26x2\startup_files\ccfg.c /////
    #ifndef SET_CCFG_MODE_CONF_VDDR_CAP
    #define SET_CCFG_MODE_CONF_VDDR_CAP 0x3A // Unsigned 8-bit integer representing the min. decoupling capacitance on VDDR in units of 100nF
    #endif
    ////////
    Regards,
    Nonaka

  • 0 in reply to Nona
    TI__Guru**** 317180 points

    Thank you. I will check why this parameter is included in this file. Your customer should not think about or modify this parameter.