Avalon BFM address issue

Hi all,

I am using avalon master bfm(64bit address and 512 bit data). This master bfm is connected to altera ddr4 memory controller.

For bfm input address, I am passing 64 bit value ('h1111_1111_1111_1111). In bfm output ,i am getting only ('h0000_0000_1111_1111) last 32 bit address.

What is that issue ? why it is giving last 32 bit not all value.

Please someone give me the solution for that .I need to address 64 bit slave.

Thanks

Venkat