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options of cc1310 antenna diversity

Okayama Gou
Intellectual 930 points

Other Parts Discussed in Thread: CC1310

Hello,

I have question about description of antenna diversity in datasheet, page35.  My understandings are following.

#1. CC1310 support Antenna Diversity with 2 Antenna, each Single-Ended operation.
#2. Each antenna of above #1 have "less sensitivity" and "less output power" than antenna with differential operation.
#3. CC1310 also support Antenna Diversity with 2 Antenna, each Differential operation, like application report swra469.pdf, with splitter and switch.
#4. It is trade-off that whether using 2 Antenna each Single-Ended operation or using 2 Antenna each Differential operation.

Questions:

Q1. Above my understandings correct?

Q2. If above my understandings are correct, is there sample firmware or is there plan to release sample firmware in the future for #1?

Q3. Also If above my understandings are correct, is there sample firmware or is there plan to release sample firmware in the future for #3?

 


Best regards,
Gou

 

  • 0
    Guru 735695 points
    I am interested in this topic too. Hope someone from TI can reveal more information about this!
  • 0 in reply to YiKai Chen
    TI__Guru**** 317180 points
    The plan is to have an App note out by the end of May describing the antenna diversity patch.
  • 0 in reply to TER
    Guru 735695 points
    Cool! I am looking forward to the application note.
  • 0 in reply to TER
    Intellectual 930 points

    TER, Thank you for your reply and information.

  • 0 in reply to Okayama Gou
    Intellectual 570 points
    Hello TER,

    Please tell me, patch mean. Patch is going to describe by example code on App note, correct?

    Best regards,
    Yasu
  • 0 in reply to Yasumika
    TI__Guru**** 317180 points
    It is possible to change the RF core functionality by changing the firmware in the RF core. Part of the firmware is placed in ROM and therefore the code has to be patched to do the changes. That is why we call it a patch.

    Yes, we will cover how to use the patch.

    Note that we will not open up the RF core for developers. For customers that needs functionality that is not included today contact your local TI contact and we can look into if it's possible.
  • 0 in reply to TER
    Intellectual 570 points

    TER,

    Thank you for your reply and comment.

    I am waiting for the App note.

  • 0 in reply to TER
    Intellectual 930 points

    TER,

    Let me know update status of schedule for patch and App note of cc1310 antenna diversity?

    Best regards,
    Gou

     

  • 0 in reply to Okayama Gou
    TI__Guru**** 317180 points

    The patch is ready but some testing and documentation are needed before release. 

  • 0 in reply to TER
    Intellectual 930 points

    Thank you for status update.

    When will the release day be planning so far?

     

  • 0 in reply to TER
    Guru 735695 points
    Any update about the release of this patch?
  • 0 in reply to YiKai Chen
    TI__Guru**** 317180 points
    Due to vacation this will be late August I believe. We have the code and patch ready, it's the documentation that is not 100 % done for release. If you like it now I can mail it to you.
  • 0 in reply to TER
    Prodigy 180 points

    Hello TER,

    As you know, after that, swra523.pdf explained antenna diversity was released.

    Regarding this note with latest RF driver, I have one question.

    According to www.ti.com/.../swra523.pdf”, our customer tried to implement additional codes into "rfPacketRx_CC1310_LAUNCHXL_TI" project.

    Consequently, there is no definition for PINCC26XX_MUX_RFC_SMI_CL_OUT in PINCC26XX.h of tirtos_cc13xx_cc26xx_2_21_00_06.
    However, they can find the definition in older tirtos_cc13xx_cc26xx_2_18_01_04 version.
    I would appreciate it if you comment how they should approach with tirtos_cc13xx_cc26xx_2_21_00_06.

    I would like to verify if our customer can add below definitions by themself with no problem.

    Last PORT_ID in  PINCC26XX.h of tirtos_cc13xx_cc26xx_2_21_00_06 is 0x34 and there are no definetions for below ID's. 

    0x35: RF Core SMI Data Link Out

    0x36: RF Core SMI Data Link In

    0x37: RF Core SMI Command Link Out

    0x38: RF Core SMI Command Link In


    Case-1)
    C:\ti\tirtos_cc13xx_cc26xx_2_18_01_04\products\tidrivers_cc13xx_cc26xx_2_16_01_13\packages\ti\drivers\pin\PINCC26XX.h

    Case-2)
    C:\ti\tirex-content\tirtos_cc13xx_cc26xx_2_21_00_06\products\tidrivers_cc13xx_cc26xx_2_21_00_04\packages\ti\drivers\pin\PINCC26XX.h


    Extracted sentences from “www.ti.com/.../swra523.pdf”.

    Building a Software Example

    1. The smartrf_settings.c file should be replaced with the one included with this document (see [4]).
    The patches, rf_patch_mce_genfsk_ant_div_pqt.h and rf_patch_rfe_genfsk_ant_div.h (see [2]), should
    be stored in the same folder as the smartrf_settings.c.

    2. The following defines must be added:
    #define IOC_PORT_RFC_SMI_CL_OUT 0x37
    #define ANTENNA_SELECT IOID_X
    #define ANTENNA_SELECT_INV IOID_Y // Added if the switch requires two control signals

    3. The ANTENNA_SELECT and optional ATENNA_SELECT_INV signals must be added to the pinTable:
    PIN_Config pinTable[] =
    {
    Board_LED1 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,
    ANTENNA_SELECT | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,
    ANTENNA_SELECT_INV | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX |
    PIN_INV_INOUT,
    PIN_TERMINATE
    };

    4. Add the following line or lines to the int main(void) function before starting the BIOS. Adding these lines
    is to connect the RFC_SMI_CL_OUT signal to wanted DIOs (ANTENNA_SELECT and
    ANTENNA_SELECT_INV).
    PINCC26XX_setMux(pinHandle, PIN_ID(ANTENNA_SELECT), PINCC26XX_MUX_RFC_SMI_CL_OUT);
    PINCC26XX_setMux(pinHandle, PIN_ID(ANTENNA_SELECT_INV), PINCC26XX_MUX_RFC_SMI_CL_OUT);

  • 0 in reply to TER
    Prodigy 30 points
    Was this app note ever release? If so can you provide a link.
    Thanks
  • 0 in reply to Mark Potts
    TI__Genius 9705 points

    Yes, please find it at the following location. 

    Regards,