6.13.1. HPS Memory Interface Architecture
Boot-up configuration of the HPS memory interface is handled by the initial software boot code, not by the FPGA programmer, as is the case for the FPGA memory interfaces. The Quartus® Prime software is involved in defining the configuration of I/O ports which is used by the boot-up code, as well as timing analysis of the memory interface. Therefore, the memory interface must be configured with the correct PHY-level timing information. Although configuration of the memory interface in Qsys is still necessary, it is limited to PHY- and board-level settings.
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