How do you choose if you use REFCLK T or B for PCIe?

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I'm working on the PCIe for a Cyclone 10 GX 10C085 and I have a question regarding the REFCLK for the PCIe.

How do I know if the reference clock should go in REFCLK_GXBL1C_CHT or REFCLK_GXBL1C_CHB (T or B)?

[skbeh]

The PCIe Hard IP placement always starts at bottom transceiver block.

T: Top

B: Bottom

So please assign the pcie refclk pin to the Bottom location REFCLK_GXBL1C_CHB (B)

[fgfasfafgfdhagdszfea]

Thanks, that is what I will do! Is there anywhere specific in the documentation that I could have found that information?

Is REFCLK_GXBL1C_CHB required (REFCLK_GXBL1C_CHT wouldn't work) or is it just preferred (easier fitting or something like that)?

[skbeh]

I repost the reply.

You can download and refer to the Device pin-out file of '10CX085' from below link:

https://www.intel.com/content/www/us/en/support/programmable/support-resources/devices/lit-dp.html

It is required to use REFCLK_GXBL1C_CHB.

Inside the pin out file:

[skbeh]

You can download and refer to the Device pin-out file of '10CX085' from below link:

https://www.intel.com/content/www/us/en/support/programmable/support-resources/devices/lit-dp.html

It is required to use REFCLK_GXBL1C_CHB.

Inside the pin out file:

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Did you post some images? I can't tell for certain, but it looks like the images aren't showing up in the post.