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Adventurer
Adventurer
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Registered: ‎05-18-2018

Accessing an apparently inaccessible MIO pin

 

I have a Zynq US+ (xazu2eg-sfva625-1-i) on a PCB that's already manufactured, and I am trying to detect an interrupt from an I2C realtime clock coming in on G13/PS_MIO27.

On the physical board, this signal is running to the Zynq US+ IC's package pin G13. In the Block Diagram editor, I have an input port named RTC_IRQ  that is routed to the PS's pl_ps_irq0 register. I want to tie these together.

However, in the I/O Ports panel of the RTL Analysis Elaborated Design screen, package pin G13, which corresponds to MIO27, cannot be tied to my RTC_IRQ port.

1) Can this particular package pin be tied to a fabric port and run to the PS block's PL-to-PS interrupt input?

2) If not, is this pin directly readable by firmware/the ARM cores?

Thanks.

mio_availability.png
mio_availability_2.png
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