Why does the Multi-Channel DMA Intel® FPGA IP for PCI Express* generate a 512-bit Avalon® Memory-Mapped interface when configured in 2x8 256-bit mode in the Intel® Quartus® Prime Pro Edition Software version 22.4 or earlier?

Description

Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 22.4 and earlier, the Multi-Channel DMA Intel® FPGA IP for PCI Express* incorrectly generates a 512-bit data interface when configured in 2x8 256-bit mode.

 

 

Resolution

To work around this problem, only use the lower 256 bits of the exposed 512-bit interface.

This problem is scheduled to be fixed in a future release of the Intel® Quartus® Prime Pro Edition Software.