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Adventurer
Adventurer
10,324 Views
Registered: ‎11-01-2014

speed kintex 7

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Hi;

 

How can I calculate the speed of Kintex 7 high speed analogue XC7K325T

 

Regards

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Xilinx Employee
Xilinx Employee
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Registered: ‎02-06-2013

Re: speed kintex 7

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Hi

 

The Fmax cannot be 1.69 GHZ

 

What is your speed grade?

 

If you are using the KC705 board the speed grade is -2 and below is the snapshot from ds182 showing the FMAX of DSP48 for different speed grades.dsp48.png

 

For -2 speedgrade the FMAX is 650.2MHz and it has 840 Dsp's

 

So GMACs=840*2*650.=1092GMACs  and not otherway around and the Fmax doesn't increase depending on the GMAC requirement.

.

 

 

So

Regards,

Satish

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Moderator
Moderator
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Registered: ‎01-15-2008

Re: speed kintex 7

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Hi,

 

you can check the datasheet for the switching characteristics details of all the blocks.

http://www.xilinx.com/support/documentation/data_sheets/ds182_Kintex_7_Data_Sheet.pdf

 

if you have design you can check the timing report after implemention for the system frequency which your design will work

 

--Krishna

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Xilinx Employee
Xilinx Employee
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Registered: ‎07-31-2012

Re: speed kintex 7

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HI,

 

What do you mean by "speed of Kintex 7 high speed analogue XC7K325T". Do you mean the max speed of the High speed IO's on kiintex 7? Please elaborate.

Thanks,
Anirudh

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Adventurer
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Registered: ‎11-01-2014

Re: speed kintex 7

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Hi; 

 

That mean how can i know the maximum clock frequncy for kintex 7 and daughter card ADC/DAC if I have GMACs. 

 

Regards. 

 

 

 

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Xilinx Employee
Xilinx Employee
10,254 Views
Registered: ‎02-06-2013

Re: speed kintex 7

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Hi

 

Check below link for relation between GMAC's,Max frequency

 

http://forums.xilinx.com/t5/General-Technical-Discussion/understanding-GMACS-and-DSP-slices/td-p/154744

Regards,

Satish

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Adventurer
Adventurer
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Registered: ‎11-01-2014

Re: speed kintex 7

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Hi 

 

For kintex 7 XC7K325T I have  DSP slices No= 840 How can i calculate the frequancy. 

http://www.xilinx.com/products/silicon-devices/fpga/kintex-7.html

 

Regards 

 

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Adventurer
Adventurer
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Registered: ‎11-01-2014

Re: speed kintex 7

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Hi; 

Could anyone correct to me. 

I calculated as shown below for kintex-7 XC7K325T

 

GMACs= DSP Slice * F max * 2 

2845= 840 * fmax*2 

 

Fmax = 1.6934... GHz 

http://www.xilinx.com/support/answers/41803.html#solution

 

 

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Xilinx Employee
Xilinx Employee
16,164 Views
Registered: ‎02-06-2013

Re: speed kintex 7

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Hi

 

The Fmax cannot be 1.69 GHZ

 

What is your speed grade?

 

If you are using the KC705 board the speed grade is -2 and below is the snapshot from ds182 showing the FMAX of DSP48 for different speed grades.dsp48.png

 

For -2 speedgrade the FMAX is 650.2MHz and it has 840 Dsp's

 

So GMACs=840*2*650.=1092GMACs  and not otherway around and the Fmax doesn't increase depending on the GMAC requirement.

.

 

 

So

Regards,

Satish

--------------------------------------------------​--------------------------------------------
Kindly note- Please mark the Answer as "Accept as solution" if information provided is helpful.

Give Kudos to a post which you think is helpful.
--------------------------------------------------​-------------------------------------------

View solution in original post