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Visitor honnappabr
Visitor
4,575 Views
Registered: ‎06-21-2016

possible to allocate 64K bytes of data in artix 7 series FPGA

can any one tell me Is it possible allocate 64K bytes of data in artix 7 series FPGA? and how do I allocate?

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4 Replies
Moderator
Moderator
4,572 Views
Registered: ‎07-01-2015

Re: possible to allocate 64K bytes of data in artix 7 series FPGA

Hi @honnappabr,

 

You can use BRAM.

Thanks,
Arpan
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Visitor honnappabr
Visitor
4,568 Views
Registered: ‎06-21-2016

Re: possible to allocate 64K bytes of data in artix 7 series FPGA

BRAM will use 32 kilo bits. I need 64 kilo bytes

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Moderator
Moderator
4,565 Views
Registered: ‎07-01-2015

Re: possible to allocate 64K bytes of data in artix 7 series FPGA

Hi @honnappabr,

 

You can cascade BRAMs .

Please go through page-120 onwards on http://www.xilinx.com/support/documentation/sw_manuals/xilinx2016_1/ug901-vivado-synthesis.pdf

 

You can modify the depth and width in the templates given in UG901, tool will infer BRAM if the values are above the threshold.

Thanks,
Arpan
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Scholar u4223374
Scholar
4,558 Views
Registered: ‎04-26-2015

Re: possible to allocate 64K bytes of data in artix 7 series FPGA

The block RAMs store 32 kilobits each. To store 64 kilobytes, you simply put two in series (two block RAMs can work together to give you a 64 Kbit array), and then put eight of those in parallel. A total of 16 block RAMs for 64KBytes.

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