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Altera_Forum
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14 years ago

How to see the values of "Number of Address Pages/Size of Address Pages" in PCIe IP?

Dear all, for the parameters in pcie express complier, how to set the values for "number of address pages" and "size of address pages" ? what are the differences if i choose different value...
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Altera_Forum
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12 years ago

Hi GZoinker,

According your explanation and the PCIe CORE manual, I have did some configurations on my system and it is working now, but I don't know if I understood how to set this parameters. I will try explain my system and the configurations that I did, and if you could check what I did I will really appreciate.

4 BARS configured - BAR1_0 => 64 bits

- BAR2 => 32 bits

- BAR3 => 32 bits

So I set 4 pages, because I have 4 BARS, is it right?

I mapped the addresses of the slaves using the following number of bits (BAR0_1 => 11 bits, BAR2 => 12 bits, BAR3 => 11 bits). So looking the PCIe IP MANUAL, I realized that I could use the the Size of Address Page as 18bits (256kBytes), because:

Slave Base Address => 12bits.

High => 2 bits (4 Address Page)

Low => 18 bits (Size Address Page)

In order to have 32 Avalon Address bits. I did this configurations and my system is now working. Is this correct? I'm thinking the right way?

Thanks for helping

Filipe