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Using Higher 16 Bits XINTF Data Bus as GPIOs in Delfino ???

Other Parts Discussed in Thread: TMS320F28335

Hi,

I was designing a PCB based on Delfino Microcontroller (TMS320F28335), and I had a simple question that can I use the higher 16-Bits of Delfino XINTF data bus as GPIOs, such that I would only need to use XINF in 16-Bit mode (accessing an SRAM in x16 Mode only).

Because in 16-Bit mode, XINTF would not be using the higher 16-Bits of XINTF, so am I free to use them as GPIO, or still must leave them unconnected ?

If used as GPIO, then during accessing data through SRAM, will these higher 16 bit data bus pins would retain their values written to them earlier as GPIOs ?

...

Thank you in advance for any answer.