TCMRETRY

I would like to use the TCMRETRY function of your company's ARMV7 chip, but there is little and unclear description of this function in the documentation, so I would like to seek assistance.
May I ask how to use this feature and how to implement it specifically?

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  • Hi Delia,

        In my system , TCM ECC has been used. 

        "The typical use of the *TCMRETRY signal is that a read transaction is retried when an TCM ECC error is detected and the error is corrected. Retrying the read transaction can get the correct read value later.​"

    ---------------In my system ,when I find ECC error, I will set TCMRETRY ​to High. but AHBS bus interface stll return error rdata, 

    Can you provide a simulation waveform test case for the use of TCMRETRY?
    When should I raise the TCMRETRY signal and return the correct RData data when I discover an ECC error?
    How to handle when the core receives a high TCMRETRY signal?

    Best friends,

    depei

Reply
  • Hi Delia,

        In my system , TCM ECC has been used. 

        "The typical use of the *TCMRETRY signal is that a read transaction is retried when an TCM ECC error is detected and the error is corrected. Retrying the read transaction can get the correct read value later.​"

    ---------------In my system ,when I find ECC error, I will set TCMRETRY ​to High. but AHBS bus interface stll return error rdata, 

    Can you provide a simulation waveform test case for the use of TCMRETRY?
    When should I raise the TCMRETRY signal and return the correct RData data when I discover an ECC error?
    How to handle when the core receives a high TCMRETRY signal?

    Best friends,

    depei

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