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AWR1642: What is the real distribution of chip EDMA?

NanShan
Intellectual 475 points
Part Number: AWR1642

Hi experts,

    From paper ' Introduction to the DSP Subsystem in the AWR16xx.pdf（Swra552）',we got it the AWR16xx device has two CCs,each with two TCs,

but from mmw Demo ,We know that  the AWR16xx device has three CCs,one with MSS,two with DSS.

    Q1:What is the real distribution of chip EDMA?

Thanks in advance!

NanShan

  • 0
    TI__Mastermind 22155 points
    NanShan,
    Can you let us know what part of the code in mmW demo you are referring to that shows 3 CCs?

    -Raghu
  • 0 in reply to Raghunandan Kamath
    Intellectual 475 points
    Hi Raghu,

    Thanks for your replies!

    The file path is :C:\ti\mmwave_sdk_01_00_00_05\packages\ti\common,

    The file name is:sys_common_xwr16xx_mss.h(line451 to line454 ) & sys_common_xwr16xx_dss.h(line307 to line311 ),

    #define EDMA_NUM_CC (1U)
    #define EDMA_NUM_TC (2U)
    #define EDMA_NUM_PARAM_SETS (128U)
    #define EDMA_MAX_NUM_TC EDMA_NUM_TC

    #define EDMA_NUM_CC (2U)
    #define EDMA_NUM_TC_IN_CC0 (2U)
    #define EDMA_NUM_TC_IN_CC1 (6U)
    #define EDMA_NUM_PARAM_SETS_CC0 (128U)
    #define EDMA_NUM_PARAM_SETS_CC1 (512U)

    BS
    NanShan
  • 0 in reply to NanShan
    TI__Mastermind 22155 points
    NanShan,

    Sorry for missing this out.

    The mmWave Demo application can be configured to execute either from the DSP or from the MSS.

    The physical number of CC is 2 but MSS can only use one CC where as DSS can use both when they are executed in isolation. When both MSS and DSS need to use EDMA at the same time, then the 2 domains can use only one CC each.

    Regards,
    Raghu
  • 0 in reply to Raghunandan Kamath
    Intellectual 475 points
    Hi Raghu,

    Thanks for your replies!

    Through your explanation, I understand the cc, but how to undersant the numbers of tc?
    #define EDMA_NUM_TC_IN_CC1 (6U)
    Is there six TCs in CC1?

    BS
    NanShan
  • 0 in reply to NanShan
    TI__Mastermind 22155 points

    NanShan,

    Sorry for my delayed reply.

    On the EVM you will be able to use the 6 TCs in CC1.

    We are in the process of updating the documentation for the same.

    Thanks,

    Raghu

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