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Digital and analog Interface

pajani CHANEMOUGA
Prodigy 30 points
Other Parts Discussed in Thread: TMS570LS3137, HALCOGEN

We are developing a safety control board; we are using microcontroller TMS570.

To validate our algorithms of control, we would like to design a prototype from the Hercule Developement Kit TMDX570LS31HDK  and some I/O interfaces.

and we would like help from specialists on the following points:

 - the interface diagram of 12 (2x6)  analog inputs  by using simultaneous samplings

 - the interface diagram of 8 analog outputs

 - is there any modification of U-boot (HDK)

Thank You in advance

Pajani

  • 0
    TI__Mastermind 22375 points

    Pajani,

    Thanks for using our forum.

    1] The TMS570LS3137 (used on the HDK) has 2 Analog to Digital converter.
        It is possible to do 2 conversion at the same time (one by each ADC module)
        Each ADC module can be programmed the convert in sequence your 6 input channels.
        As example, ADC1 will be in charge of analog input 1 to 6 and ADC2 in charge of analog input 7 to 12.

    2] There is no Digital to Analog module on the TMS570LS3137. Can you explain what you are trying to achieve?

    3] On TMS570LS3137  there is no boot rom. The device starts from flash and you have to generate your own boot code.
         Halcogen can be used to generate the startup code for you.

    Please let me know if you need additional information.

  • 0 in reply to Jean-Marc Mifsud
    Prodigy 30 points

    Jean Marc,

    Thanks for your answers.

    I need some design examples for interfacing the MCU to the sensors  ( the voltage and the bandwidth are respectively of 5V and 500Hz)

    Best regards

    Pajani