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Visitor dragonl2000l
Visitor
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Registered: ‎08-01-2018

MGT "RN" power supply group for a XCKU060-FFVA1517

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My question is similar to one posted to this forum in 2016 in the post: "Grounding Unused GTH power group - MGTAVCC, MGTAVTT, and MGTVCCAUX"

Specifically, are the MGT power pins with the suffix "_RN" connected on the XCKU060-FFVA1517?

From the "UltraScale and UltraScale+ Package Device Pinout Files" page, the file for the XCKU060-FFVA1517 lists MGTAVCC, MGTAVTT and MGTVCCAUX power pins with suffixes of:
"_L"
"_RN"
"_RS"
The file I am referring to is here: https://www.xilinx.com/support/packagefiles/usapackages/xcku060ffva1517pkg.txt

And in figure 3-18 (page 190) of UG575, the "_RN" pins are shown in the device diagram along with the "_RS" and "_L" pins.
https://www.xilinx.com/support/documentation/user_guides/ug575-ultrascale-pkg-pinout.pdf#page=190

However, table 1-7 (page 46) of that same document shows no quads are powered by the "RN" power supply group on a XCKU060-FFVA1517.
https://www.xilinx.com/support/documentation/user_guides/ug575-ultrascale-pkg-pinout.pdf#page=46

Similarly, table 5-2 (page 316) of UG576 also shows that no quads connect to "RN" supply group for this device.
https://www.xilinx.com/support/documentation/user_guides/ug576-ultrascale-gth-transceivers.pdf#page=316

Are these pins listed for migration purposes only, or are they actually connected on a XCKU060-FFVA1517?

I'd appreciate any insight on this.

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Xilinx Employee
Xilinx Employee
360 Views
Registered: ‎10-19-2011

Re: MGT "RN" power supply group for a XCKU060-FFVA1517

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Hi @dragonl2000l,

the _RN bank is not connected in xcku060-ffva1517.

You also see the available banks in ug575, page63, figure 1-16.

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3 Replies
Xilinx Employee
Xilinx Employee
361 Views
Registered: ‎10-19-2011

Re: MGT "RN" power supply group for a XCKU060-FFVA1517

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Hi @dragonl2000l,

the _RN bank is not connected in xcku060-ffva1517.

You also see the available banks in ug575, page63, figure 1-16.

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Visitor dragonl2000l
Visitor
344 Views
Registered: ‎08-01-2018

Re: MGT "RN" power supply group for a XCKU060-FFVA1517

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Thank you for the confirmation.  It looks like this is just one of a few device-and-package combinations where one of these power supply groups is entirely unused.  It's was just interesting that in the other cases I found this to occur (the Virtex devices in the FSVH2104, FLGA2577 and FSVH2892 packages), the pins of the unused power supply group for the smaller device option were labeled as not connected ("NC") in the pinout files.

Thanks again!

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Visitor dragonl2000l
Visitor
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Registered: ‎08-01-2018

Re: MGT "RN" power supply group for a XCKU060-FFVA1517

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Found a related Xilinx note: AR# 59834. It discusses this same topic with another package in the Kintex family.
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