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TMS570LC4357: Controls & Synchronization of eQEPx Inputs

Part Number: TMS570LC4357

Hello,

The table 6-9 In the Reference Manual provides configuration of IOMM mdoule in order to control eQEPx Inputs connections.
In the datasheet, section 7.3.3, it is the same description but the Table 7-12 does not provide the same configuration of IOMM mdoule in order to control eQEPx Inputs connections (e.g. for eQEP1A: PINMMR170[18:16] = 001 or PINMMR170[18:16] = 010 whereas in the Reference Manual for eQEP1A: PINMMR170[16] = 0 or PINMMR170[16] = 0 and PINMMR170[17] = 1)

Why are there differences between these two tables ?

What is the correct Table and correct configuration for controls for eQEPx Inputs ?

Best regards,

Christopher

  • Hi Christopher,

    The Table 7-12 in datasheet is correct. If using double synch, PINMMR170[18:16] has to be 001b or 000b; If using double synch+filter, the PINMMR170[18:16] has to be 010b.
  • Hello,

    In this case, the table 6-9 In the Reference Manual providing configuration of IOMM mdoule in order to control eQEPx Inputs connections is not correct for the TMS570LC4357 and the datasheet is the up to date documentation about this feature; Could you confirm this please ?

    In addition, the datasheet explains only that for double synch, PINMMR170[18:16] has to be 001b and not to 000b as you suggested. Why PINMMR170[18:16] can be to 000b ?

    Best regards,
    Christopher
  • Hi Christopher,

    The Table 6-9 in the latest rev of TRM has been updated.

    I will check 000b value for pinmmtr170.