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TMS570LS0432 SPI connection with LTC6804HG-2

user4669877
Prodigy 90 points
Other Parts Discussed in Thread: HALCOGEN, TMS570LS0432

Hi,

I want to communicate via SPI  with LTC6804HG-2 IC .I have TMS570LS0432 microcontroller .I made example which given by halcogen.I can send and get data to tms570 itself but i cannot make communication with this IC.What kind of settings I have to do?.What kind of information do ı hvae to know for this communication

thanks

  • 0
    TI__Guru 72500 points

    While I am not an expert on the Linear Technology part, it looks like you should connect LTC-SCK to SPICLK, LTC-SDI to SPISIMO, LTC-SDO to SPISOMI (with a pull-up) and LTC-CSB to  SPICS. You did not tell me which SPI you want to use on the TMS570LS0432, so I am just using the generic pin names. The TMS570 should be the master. The data format should be polarity=0, phase=1.

  • 0 in reply to Bob Crosby
    Prodigy 90 points
    Hi,
    I used mibspi1 but how can I know these settings appropriate for LTC6804?what kind of information do I have to know?
    What kind of code do I have to develop for communication?
    I didnt find any video or tutorial about SPI communication with TMS570 and other kind of devices?
  • 0 in reply to user4669877
    TI__Guru 72500 points

    Page 36 of the LTC6804 data sheet shows the required SPI timings. Section 21.2.7 of the TMS570LS04x Technical Reference Manual shows the different timing formats supported. Notice that figure 21-9 matches the format for the LTC6804.

  • 0 in reply to Bob Crosby
    Prodigy 90 points

    Hi,

    At the datasheet of LTC6804 page 34 its written "system using CPHA=1 CPOL=1"but you said it seems like pol=0 phase=1 and I think it seems pol=1 and phase=0 :)

    how can we  be sure about true format ? and

    the important thing sorry for this question but I am new at programming "How can I write a code  for supply communication ? You can say you must know these things like that.... 

    Thanks