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F28075 GPIO Input Range for External Interrupts (Ex. XINT) ?

Sashank Nanduri
Prodigy 20 points

In the case of the F28069, in Table 1-56 (Section 1.4.2 GPIO Configuration Overview) of the Technical Reference Manual it states that the GPIO range for external interrupt XINT1 is (GPIO 0-31). Does a similar limitation exist with the F28075?

I am unable to tell from the section 6.11.2.4 (Chapter 6 - GPIO, Table 6-19 of the F28075 TRM).

Thanks for any help. 

  • 0
    TI__Guru 61235 points

    Hi Sashank,

    The limitation does NOT exist on F2807x devices.  See the F2807x TRM, SPRUHM9, p.741, section 6.10.  It says:

    On this device, the Input X-BAR is used to route signals from a GPIO to many different IP blocks such as
    the ADC(s), eCAP(s), ePWM(s), and external interrupts. The Input X-BAR has access to every GPIO and
    can route each signal to any (or multiple) of the IP blocks previously mentioned. This flexibility relieves
    some of the constraints on peripheral muxing by just requiring any GPIO pin to be available.

    You can assign any GPIO to the INPUTx that routes to one of the external interrupts (e.g., INPUT4 for XINT1).

    Regards,

    David