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TMS570LS0232: Can TMS570LS 02x/03x/04x be used to generate 3Phase center aligned PWM to control a PMSM motor?

user1355220
Prodigy 30 points
Part Number: TMS570LS0232
Other Parts Discussed in Thread: HALCOGEN

HET of TMS570LS  02x/03x/04x only has 4 even pins, and 128 words of instruction.

Anyone sucessed?

  • 0
    TI__Guru 68930 points

    The even pins are the ones bonded out to the package.

    The logic for the 'odd' pins is implemented.

    So you can write the program to toggle the odd pins, and the XORSHARE will combine the odd pin and even pin (from HET program view) onto the even physical pin using the XOR function to resolve the two inputs.


    Ex.  you can set XORSHARE between pins 0 and 1.   Write software to toggle pins 0 and 1 in HET.    With XORSHARE turned on what comes out physical HET pin 0 is the XOR of logical pin 0 and logical pin 1.



    Actually we prioritize the even pins on the HET to come out of the smaller pin count packages because they are most useful.. they can be toggled individually, or with XORSHARE or ANDSHARE modes.

    -Anthony

  • 0 in reply to Anthony F. Seely
    Prodigy 30 points

    In HET IDE，if the device is TMS570LS 02x, only four XOR channels can be actived. In Motor control application, at least 6 channels needed.

  • 0 in reply to user1355220
    TI__Guru 59540 points
    Hello User,

    As Anthony mentioned, there are more pairs possible if you consider that all pins are implemented internally and simply not bonded to a pin. For the LS0x32 partnumbers, all even numbered channels up to NHET[30] are bonded out or capable of being bonded out via IOMM (mux) configuration. To use the unbonded channels in the XOR mode, you may need to be programmed outside of Halcogen. You may also be able to see more combinations if you configure the IOMM tab to bring out more NHET channels via the pinmux configuration.