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I2C in F28069 ISO control card

Prasanta Achanta
Prodigy 100 points

Hi,

I want to use the I2C on the mircocontroller to receive data from an external ADC. From the control card schematic, it looks like the pins SDAA (GPIO_28) and SCLA (GPIO_29) are connected to FT2232H.  Is there a way to use the I2C while still being able to program the control card using the USB ?

Thanks,

Prasanta.

  • 0
    TI__Guru 57255 points

    Hi Prasanta,

    Two notes:
    1) I2C module A's functionality is also available on GPIO32 & GPIO33 according to the GPIO mux. 
    2) The FT2232H chip enables two communication paths - one for JTAG and one for UART/SCI.  The connection between GPIO28/29 and the FT2232H is for the UART/SCI communication path and does not affect the ability to debug/program the C2000 device via JTAG.  To remove any contention between GPIO28 and the FTDI, SW3's position 2 switch should be open/off.  Once done, you can use GPIO28/29 however you wish to on your baseboard.

    Hopefully this helps.


    Thank you,
    Brett

  • 0 in reply to Brett Larimore
    Prodigy 100 points

    Thanks for the quick reply. That was very helpful. The info sheet has the same info.

    Thank you,

    Prasanta.