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TMS320F28P650DH: parallel communication interface

nie chunying
Intellectual 350 points
Part Number: TMS320F28P650DH


Tool/software:

Hello, expert, I want to add high-speed communication on the dsp-F28P65, the external chip needs parallel port communication, please tell me about the information and history of parallel port communication

  • 0
    TI__Guru** 115881 points

    Hi,

    We only have EMIF interface as parallel port on this device. On one of the device we have another parallel port (uPP) but that was for very specific end use case hence we did not carry forward it to future devices. 

    Regards,

    Vivek Singh

  • 0 in reply to Vivek Singh
    Intellectual 350 points

    Hello, expert, because our project pin is limited, I first investigate the remaining IO port resources of the chip, this is my investigation；

    I just want to use parallel port communication to transmit data, may I ask the function of the GPIO pin corresponding to the red box variable, at least how many can be used? The blue box is the GPIO port multiplexing pin corresponding to this peripheral conflicts with other peripheral pins. Is the blue box pin necessary

    My ultimate goal is to use EMIF to transfer data, and I want to reference the minimum number of pins, do you know how to determine the minimum number of pins?

    What is the maximum transmission speed of the parallel port communication achieved by this EMIF? I did not see it in the chip data manual. What factors can affect this maximum transmission speed?

  • +1 in reply to nie chunying
    TI__Guru** 115881 points

    Hi,

    Please refer this appnote for more detail on this interface and usage.

    Also if you are using ASYNC interface then the blue box signals are not needed.

    Regards,

    Vivek Singh