DMA Controller does not work

Hi everyone,

I am studying the DMA Controller IP by creating a very simple system:

Test Pattern Generator --> DMA Controller -> DDR3 SDRAM. Like this:

Then, I use Hard Processor system to read data from DDR3 through HPS2FPGA bridge.

At word 0: the value is 0x00000000.

At word 1: the value is 0x00101010.

At word 2: the value is 0x00101010.

...

At word 320: the value is stil 0x00101010.

We can see that the data we read from DDR3 is not correct with the Test Pattern.

Is there anywhere that I need to notice?

This is the configuration window of DMA IP:

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