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RM57L843: How to do PBIST test for RM57Lx device

shenruming
Intellectual 575 points
Part Number: RM57L843

Hi,

From the Demo_app project you created in SafeTI Diagnostic Library 2.4.0, I get some key information as below and need you confirm:

1. For RM57Lx device, just algorithm "PBISTALGO_MARCH13N_2PORT" need to be ran on 2 port memories. Right? If yes, please tell why the other algorithms were missing on 2 port memories?

2. For RM57Lx device, "PBIST_RAMGROUP_36_CPGMAC_CPPI" is the unique 1 port memory need to do PBIST test,  and "PBISTALGO_MARCH13N_1PORT" is the unique algorithm for "PBIST_RAMGROUP_36_CPGMAC_CPPI". Both right?

3. You didn't provide the example on how to use test type "PBIST_EXECTUE_OVERRIDE", how to use it for RM57Lx device?

Thanks.

  • 0
    TI__Guru**** 196306 points
    shenruming said:
    1. For RM57Lx device, just algorithm "PBISTALGO_MARCH13N_2PORT" need to be ran on 2 port memories. Right?

    Yes, you are correct. The device datasheet recommends using two-port ALGO for 2-ports RAM groups.

    shenruming said:
    please tell why the other algorithms were missing on 2 port memories?

    The single-port RAM groups are not listed in the exmaple.

    shenruming said:
    2. For RM57Lx device, "PBIST_RAMGROUP_36_CPGMAC_CPPI" is the unique 1 port memory need to do PBIST test,  and "PBISTALGO_MARCH13N_1PORT" is the unique algorithm for "PBIST_RAMGROUP_36_CPGMAC_CPPI". Both right?

     PBIST_RAMGROUP_36_CPGMAC_CPPI is the # of RAM group in Table 6-33 of Datasheet, and it is 1-port memory. It is only 1-port memory tested in the example. You can use 1-port ALGO for this group.

    shenruming said:
    3. You didn't provide the example on how to use test type "PBIST_EXECTUE_OVERRIDE", how to use it for RM57Lx device?

    The example doesn't use overwrite. I will develop a simple example for you. 

  • 0 in reply to QJ Wang
    TI__Guru**** 196306 points

    You can use the same API for PBIST test with overwrite enabled. 

    For example:  retVal = SL_SelfTest_PBIST( PBIST_EXECUTE_OVERRIDE, all2portmemories[1], PBISTALGO_MARCH13N_2PORT);

    When overwrite is not enabled, you need to write the RAM lection to RINFOL and RINFOU registers.

    When overwrite is enabled, the memory selection is from the ROM. You don't need to program RINFOL and RINFOU.