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Requirement of example project for LTE CPRI 15Mhz test case for K2L

Ravi Raj Saxena70
Prodigy 60 points
Other Parts Discussed in Thread: TCI6630K2L

We are working on Lamar Board (TCI6630K2L).

Kindly provide some example project for 15 Mhz  LTE CPRI test case.

  • 0
    TI__Guru* 81335 points

    Welcome to the TI E2E forum. I hope you will find many good answers here and in the TI.com documents and in the TI Wiki Pages (for processor issues). Be sure to search those for helpful information and to browse for the questions others may have asked on similar topics (e2e.ti.com). Please read all the links below my signature.

    We will get back to you on the above query shortly. Thank you for your patience.

  • 0 in reply to Raja
    Prodigy 60 points

    We found an example project "iqn2LteCpriK2LTestProject" in MCSDK ver 2_3_01_02_05. The test case are running for 20 MHz, 10 MHz, & 5 MHz.

    However the 15 MHz is not running.

    We have tried every possible combination of link rate & NumOfAxC for 15 MHz. But none of them worked.

    Our Lamar board is in DSP-No BOOT configuration.

    Kindly provide some feedback.

  • 0 in reply to Ravi Raj Saxena70
    TI__Guru* 81335 points
    We recommend you to try the latest MCSDK 3.x. Please find the latest MCSDK download link below my signature. Thank you.
  • 0 in reply to Raja
    Prodigy 60 points
    We tried the latest MCSDK pdk_keystone2_3_01_04_07 (the previous one was pdk_keystone2_3_01_02_05 ).

    However the 15 MHz is still not working while other work.

    Here are the logs for the latest trial



    [C66xx_0]
    Beginning test

    ######### IQN2 ERRORS ###########

    ###############################

    Number of monolithic packets received in RX queue channel 0: 14
    Number of monolithic packets in TX free queue for channel 0: 1
    Number of monolithic packets received in RX queue channel 1: 14
    Number of monolithic packets in TX free queue for channel 1: 1
    Test a) Monolithic Packet Data Recv: on chan: 0 are :14
    Test a) Monolithic Packet Data Recv: on chan: 1 are :14
    Test b1) Monolithic Packet Tx Descriptor Counts:0 PASS
    Test b2) Monolithic Packet Tx Complete Descriptor Counts:2 FAIL
    Test b3) Monolithic Packet Rx Descriptor Counts:0 PASS
    Test b4) Monolithic Packet Rx Free Descriptor Counts:28 PASS
    All tests have passed
    End of Program!!

    There was never an IQN2 ERRORS in other cases. After some checking I've found it was because of "si_egr_iq_efe_starve_err" flag

    Kindly provide some feedback.
  • 0 in reply to Ravi Raj Saxena70
    TI__Mastermind 21025 points
    Hello, sorry for the extended delay. LTE15 is not one of the standard rates supported by the examples or directly supported by the LLD. The IQN2 user guide (section 3.2.2.2.1) says this:

    "The LTE15 link rate does not evenly fit into the CPRI link. The CPRI stuffing sample mechanism defined
    in Mapping Method 3 (see CPRI spec 5.0) is implemented to rate match the LTE15 into the CPRI PHY.
    Rate matching is the concept of inserting bubbles in order to match the rates of the dissimilar frequency
    requirement."

    So there is more to change than just a few parameters. Is it possible for you to use LTE 20 or 10?
  • 0 in reply to db_woodall
    Prodigy 60 points
    Hello,
    Thank you for the Reply

    However ,We also need to support 15Mhz apart from 10 and 20Mhz.

    We had tried bubble insertion for 15 Mhz provided in IQN2 user guide, but it still doesn't work.

    How can we make it Work?

    Kindly help.
  • 0 in reply to Ravi Raj Saxena70
    TI__Mastermind 21025 points

    Hello,

    Attached is a K2L verification test that configures LTE15.  It probably won't compile as-is due to it being pulled out of a larger test environment, but all of the configuration code should be included.

    LTE15_avv_ctr03.tar