Device Family: Intel® Arria® 10

Type: Answers

Area: EMIF

IP: Arria 10 External Memory Interfaces

How can the buffer size of the Intel® Arria® 10 External Memory Interface (EMIF)  IP be controlled to reduce the RAM blocks usage in the FPGA device?


In the Intel® Quartus® Prime software, the buffer size of the Platform Designer interconnect depends on two factors:

1.     Maximum pending read transactions from an Avalon slave IP (for instance: Intel Arria® 10 EMIF IP)

2.     Burstcount width of the Avalon MM interface

However, the maximum pending read transactions of the EMIF IP can't be changed and is set to a fixed value of 64 to maximize the EMIF efficiency. 


To work around this problem, reduce the burstcount width of the Avalon MM slave interface to reduce the buffer size of the Intel® Arria® 10 EMIF IP.