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Questions about the Data sheet of TMS570LS3137-EP

Haggy
Intellectual 440 points
Other Parts Discussed in Thread: TMS570LS3137-EP

I am reading "TMS570LS3137-EP 16- and 32-Bit RISC Flash Microcontroller (Literature Number: SPNS230D)".

About "Table 6-36. ESM Channel Assignments", I want to know the details.

I want to know the safety function or diagnosis to generate a following ERROR SOURCES.

[ERROR SOURCES]

-----------------------------------------------------------------------------------

DMA - imprecise read error

FMC - correctable error: bus1 and bus2 interfaces

DMA - imprecise write error

FMC - correctable error (EEPROM bank access)

FMC - uncorrectable error (EEPROM bank access)

IOMM - Mux configuration error

Ethernet Controller master interface

FMC - uncorrectable error (address parity on bus1 accesses)

RAM even bank (B0TCM) - uncorrectable error

RAM odd bank (B1TCM) - uncorrectable error

RAM even bank (B0TCM) - ECC uncorrectable error

RAM odd bank (B1TCM) - ECC uncorrectable error

FMC - uncorrectable error: bus1 and bus2 interfaces

-----------------------------------------------------------------------------------

From the "Table 4. Summary of Safety Features and Diagnostics" of the Safety Manual, please tell me the Unique Identifier which generates the above error.

  • 0
    TI__Guru 72500 points

    For details see the Technical Reference Manual SPNU499

  • 0 in reply to Bob Crosby
    Intellectual 440 points
    Hi Bob Crosby

    I've read the Technical Reference Manual SPNU499.
    Please tell me about not understand of part.

    Please tell me the difference between "RAM even bank (B0TCM) - uncorrectable error" and "RAM even bank (B0TCM) - ECC uncorrectable erro".
    Please tell me the difference between "RAM odd bank (B1TCM) - uncorrectable error" and "RRAM odd bank (B1TCM) - ECC uncorrectable error".
    The diagnosis function which generates the respective errors, please answer.
  • 0 in reply to Haggy
    TI__Guru 72500 points

    Section 6.1.1 of the TRM SPNU499 has a diagram showing the two tightly coupled memory (TCM) interfaces used for RAM. B0TCM interfaces to 64 bits of RAM (plus 8 ECC bits) with the first address 0x8000000. It is called the even BTCM bus. B1TCM interfaces to 64 bits of RAM (plus 8 ECC bits with the first address 0x80000008. It is called the odd BTCM bus. The RAM addresses alternate between the two BTCMs every 8 bytes. Each BTCM has its own ECC logic and the errors are reported separately.

  • 0 in reply to Bob Crosby
    Intellectual 440 points
    Hi Bob Crosby

    I was understanding about the differences between odd and even.
    But, my question can not be resolved.

    I want to know the difference between "RAM even bank (B0TCM) - uncorrectable error" and "RAM even bank (B0TCM) - ECC uncorrectable error".
    I want to know the difference between "RAM odd bank (B1TCM) - uncorrectable error" and "RRAM odd bank (B1TCM) - ECC uncorrectable error".

    In Figure 6-1, it has four "32 bits data and 4 ECC bits".
    For example, the error of the "Upper 32 bits data and 4 ECC bits" of Even side refers to the "RAM even bank (B0TCM) -uncorrectable error".
    For example, the error of the "Lower 32 bits data and 4 ECC bits" of Even side refers to the "RAM even bank (B0TCM) -ECC uncorrectable error".
    Is my understanding correct?
  • 0 in reply to Haggy
    TI__Expert 6985 points

    Haggy,

    The information you are looking for is in the TRM section 6.19 (Reset / Abort / Error Sources) Table 6-37:

    ERROR SOURCE  SYSTEM MODE ERROR RESPONSE  ESM HOOKUP group.channel
    B0 TCM (even) ECC single error (correctable)  User/Privilege  ESM  1.26
    B0 TCM (even) ECC double error (non-correctable)  User/Privilege  Abort (CPU), ESM => nERROR 3.3
    B0 TCM (even) uncorrectable error (i.e. redundant address decode) User/Privilege  ESM => NMI => nERROR  2.6
    B0 TCM (even) address bus parity error User/Privilege  ESM => NMI => nERROR  2.1

    The TCM RAM Wrapper performance some diagnostics like the redundant address decode a error detected in this logic is considered to be an uncorrectable error. This feature is described in the TRM section 6.3.3 (Redundant Address Decode).

    Best Regards,
    Christian