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Thomas
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Registered: ‎04-05-2021

GPIO and EMIO pin numbers

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Hello everyone,

I am exporting the GPIO peripheral to PL using the EMIO interface.

I know that on Zynq 7000+, EMIO pin numbering starts at 54 and goes up to 117.

So logically EMIO[0] has a pin reference of 54, EMIO[1] => 55 and so on ...

What I do not understand is, why for a GPIO EMIO's width = 1, I have three GPIO signals ?

emio.png

I only care about the GPIO output, how do I find what is the EMIO pin number ?

I saw the GPIO bus width can go up to 64, so does that mean there are 64x3 possible emio pins ? (I know it is not the case so I am confused).

Hope I make sense !

Thanks for any help,

Thomas.

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Thomas
Observer
Observer
118 Views
Registered: ‎04-05-2021

Solution : 1 EMIO = three wires so they all respond to EMIO[0] 

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Thomas
Observer
Observer
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Registered: ‎04-05-2021

TLDR : what is the emio pin number of GPIO_O[0:0] ? 

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Thomas
Observer
Observer
119 Views
Registered: ‎04-05-2021

Solution : 1 EMIO = three wires so they all respond to EMIO[0] 

View solution in original post