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Visitor pmascarenhas
Visitor
4,277 Views
Registered: ‎10-11-2016

Grounding Unused GTH power group - MGTAVCC, MGTAVTT, and MGTVCCAUX

I am planning to use the part FFVA1517 XCKU060. 

Based on UG576, UG576 (v1.3) November 24, 2015, Pg. 298, it says

"If all of the Quads in a power supply group are not used, the associated power pins can be left unconnected or tied to GND  (unless the RCAL circuit is in that Quad)."

 

Also on the Table 5-2 shows the part as having only the "L" & "RS" Power group, and the RCLs in Bank 128 & 226.

 

 

Screenshot from 2016-10-11 15:04:24.png

Based on the Link provided UG575 (v1.6) April 25, 2016, Pg 145, the ASCII  pinout information shows the same part in addition to the "L" and "RC" Power group having "RN" Power groups.

Q1 )  Is this an Error?

 

http://www.xilinx.com/support/packagefiles/usapackages/xcku060ffva1517pkg.txt


AB34  MGTAVCC_L    
AC32  MGTAVCC_L    
B8    MGTAVCC_RN   
C6    MGTAVCC_RN   
AA6   MGTAVCC_RS   
AC6   MGTAVCC_RS   
AA36  MGTAVTT_L    
AB38  MGTAVTT_L    
B4    MGTAVTT_RN   
C2    MGTAVTT_RN   
AA2   MGTAVTT_RS   
AB4   MGTAVTT_RS   
AA32  MGTVCCAUX_L  
W32   MGTVCCAUX_L  
T8    MGTVCCAUX_RN
V8    MGTVCCAUX_RN
AB8   MGTVCCAUX_RS
AD8   MGTVCCAUX_RS 

 

Q2)  I am not using all the GTH/Quad blocks in my design so I plan to GND the RX pins & associated Analog Supply pins.  However I can't find the document which clearly shows the particular QUAD-GTH association/mapping to its Power Pins.

I further looked at the Packaging and Pinout document UG575 (v1.6) April 25, 2016, PAGE 166 to see if I can find the mapping info for the Per bank Quad block and its associated Analog supply pins. but couldn't conclude.

 

Ex. I am not using Bank 126/127 & 128. So which MGTAVCC, MGTAVTT, and MGTVCCAUX pins can be grounded?

 

So please can someone help me point in the correct direction.

 

Thank you

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Visitor pmascarenhas
Visitor
4,166 Views
Registered: ‎10-11-2016

Re: Grounding Unused GTH power group - MGTAVCC, MGTAVTT, and MGTVCCAUX

Any thought?

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