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Understanding Address Map

jmales

Please refer to page 113 of http://www.xilinx.com/support/documentation/user_guides/ug585-Zynq-7000-TRM.pdf

I'm not understanding this table. From what I can tell, I have from 0010_0000 to 3FFF_FFF of DDR memory, which is 1 072 693 247 bytes and approximately 1 Gbyte of memory available to write into the DDR, correct? I thought the Zedboard had only 512 Mbytes of DDR memory...

Also, in that table, it says that I have approximately 2Gbytes (4000_0000 to BFFF_FFFF) of address available for PL. What does this space mean exactly? What can I save in here?

Thank you

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    thx for your reply and sorry for my less information about the two ethernet question.

    we design a custom board with ZC7020. And we need to use two ethernet port. the two port are all connected to PS Side with RGMII, and they all use the same MDC and MDIO signal from MIO50 and MIO53.

    BTW, the two PHYs are the same (Marvell 88E1512).  PHY0 addrss is 0, and PHY1 address is 1 by CONFIG pin to set it.

    i configure the vivado environment and then export to SDK, and then add a new Application (Peripheral Test application) to test the peripheral device. what makes me confuse is that: it can detect PHY address separately . However, when i enable the two ethernet function in Vivado and repeat to do it at SDK (ofcourse, the code at SDK is to check two ethernet devices). it cannoy detect phy1 address but can detect phy0 address.

    Is there anythig i miss to edit when i want to use two ethernet? thx very much for any reply.

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  • 0

    thx for your reply and sorry for my less information about the two ethernet question.

    we design a custom board with ZC7020. And we need to use two ethernet port. the two port are all connected to PS Side with RGMII, and they all use the same MDC and MDIO signal from MIO50 and MIO53.

    BTW, the two PHYs are the same (Marvell 88E1512).  PHY0 addrss is 0, and PHY1 address is 1 by CONFIG pin to set it.

    i configure the vivado environment and then export to SDK, and then add a new Application (Peripheral Test application) to test the peripheral device. what makes me confuse is that: it can detect PHY address separately . However, when i enable the two ethernet function in Vivado and repeat to do it at SDK (ofcourse, the code at SDK is to check two ethernet devices). it cannoy detect phy1 address but can detect phy0 address.

    Is there anythig i miss to edit when i want to use two ethernet? thx very much for any reply.

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