Device Family: Intel® Arria® 10 GT, Intel® Arria® 10 GX, Intel® Arria® 10 SX
Area: EMIF, Intellectual Property
IP Product: DDR4 Hilo Daughter Card
There is a known issue in the Quartus® II software version 13.1 Arria 10 Edition where the DDR4 MR4 write/read preamble bits are set incorrectly.
The issue is fixed in the Quartus II software version 14.0 Arria 10 Edition.