Intel® Arria® 10 Hard Processor System Technical Reference Manual

ID 683711
Date 1/10/2023
Public

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29.1.3. FPGA-to-HPS SDRAM Interface

The FPGA-to-HPS SDRAM interface is a direct connection between the FPGA fabric and the HPS SDRAM controller. The interface is highly configurable, allowing a mix between the four port configurations and the port width. The FPGA-to-HPS SDRAM interface supports AMBA* AXI* interface standards.

Table 237.  FPGA-to-HPS SDRAM Interfaces and Clocks
Interface Name Associated Data Interface Associated Clock Interface
F2SDRAM0 f2sdram0_data f2sdram0_clock
F2SDRAM1 f2sdram1_data f2sdram1_clock
F2SDRAM2 f2sdram2_data f2sdram2_clcok

The FPGA-to-HPS SDRAM interface is a configurable interface to the multi-port SDRAM controller. There are four port configurations that are a combination of the SDRAM ports 0 - 2 that you are able to select. Once a port configuration is selected, you can choose to enable the ports that you need.

The total data width of all interfaces is limited to a maximum of 256 bits in the read direction and 256 bits in the write direction. The HPS SDRAM controller supports up to 3 masters (command ports), 3x 64-bit read data ports and 3x 64-bit write data ports.

Figure 159. FPGA-to-HPS SDRAM Platform Designer (Standard) Interface