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lajitha82
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Registered: ‎12-18-2018

Data transfer between BRAM and DDR in KC705

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We are trying to transfer some data stored in BRAM to DDR in KC705 using Microblaze processor system. Whether DMA need to be included in between the path, or else BRAM controller is fine? Is there any sample codes available.

 

Lajitha

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florentw
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Registered: ‎11-09-2015

HI @lajitha82 

The BRAM controller will only allow you to access the memory on the BRAM from an AXI-MM interface. You still need a block to do the transfer of the data. So yes you need a DMA.

If you look at the AXI DMA PG, there is some examples mentioned. But this is not from BRAM to DDR so you will have to adapt it


Florent
Product Application Engineer - Xilinx Technical Support EMEA
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florentw
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Registered: ‎11-09-2015

HI @lajitha82 

The BRAM controller will only allow you to access the memory on the BRAM from an AXI-MM interface. You still need a block to do the transfer of the data. So yes you need a DMA.

If you look at the AXI DMA PG, there is some examples mentioned. But this is not from BRAM to DDR so you will have to adapt it


Florent
Product Application Engineer - Xilinx Technical Support EMEA
**~ Don't forget to reply, give kudos, and accept as solution.~**

View solution in original post

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