Use BRAM as high bandwidth averager buffer

Applications, development tools, FPGA, C, WEB
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KSY
Posts: 4
Joined: Wed Apr 21, 2021 6:37 am

Use BRAM as high bandwidth averager buffer

Post by KSY » Wed Oct 20, 2021 2:43 am

Hi,

I am trying to make High-Bandwidth averager with FPGA. I need over 8k samples per pulse and averaging over 2k times (or 1k times). So I tried to modify Anton's averager project that use BRAM, but I can't extend the number of samples over 1024. It uses 32bit data width.

I set Block Memory generator 32 width/16384 depth. But it looks like they don't save data after 1024. When I call data to C, they return dummy data after 1024(that dummy data are always same, don't change). It uses 0x4000_0000 ~ 0x4000_0FFF (range 4k) for BRAM data memory map address.

Can I use BRAM as I want? Or should I use another memory like DRAM? Also it will be thankful to tell me my mistake or misunderstanding.

Thanks for the help

KSY
Posts: 4
Joined: Wed Apr 21, 2021 6:37 am

Re: Use BRAM as high bandwidth averager buffer

Post by KSY » Wed Oct 20, 2021 7:50 am

OK... I resolved this problem. It was just matter of memory address.

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