how to select the BITSTREAM.CONFIG.CONFIGRATE value?

[m006]

[Netlist 29-154] Cannot set property 'BITSTREAM.CONFIG.CONFIGRATE' because incorrect value '33' specified. Expecting type 'enum' with possible values of '2.7,5.3,8.0,10.6,21.3,31.9,36.4,51.0,56.7,63.8,72.9,85.0,102.0,127.5,170.0'. ["E:/temp/arm/iphone8/Xapp_QUAD_SPI/project_1/project_1.srcs/constrs_1/imports/source/kcu105.xdc":45]

[kkn · Accepted solution]

Hi,

are you using ultrascale+ devices then you need to choose among the configrate  2.7, 5.3, 8.0, 10.6, 21.3, 31.9, 36.4, 51.0, 56.7, 63.8, 72.9, 85.0, 102.0, 127.5, 170.0

check page 310 in ug908 for the configrate.

This is the reason you see the message with the expeted values which I have copied here

[vishnu.k]

Hi @kkn 

May I know, what is clock frequency represented by each of these values?

For Ex. Configrate 85 means 85MHz or any other frequency?

[kkn]

@vishnu.k ,

yes 85 means 85 Mhz. Also I advice you to look at the cclk tolerance in datasheet of the particular device you choose since you may not observe exact clock frequency during operation of internal configuration clock