Device Family: Intel® Arria® 10

Intel Software: Quartus Prime

Type: Answers

Area: EMIF


Last Modified: November 28, 2016
Version Found: v16.1 Update 1
Bug ID: FB: 413225;
IP: Arria 10 External Memory Interfaces

Selected input mode termination value for data bus is not valid. Please select a value of 50 ohm or higher.

Description

You may see the above error starting with Quartus Prime software version 16.1.1 if your EMIF IP uses input termination below 50 ohms for the following I/O standards:

  • 1.5V SSTL (DDR3)
  • 1.35V SSTL (DDR3L)
  • 1.5V HSTL  (QDRII/II+/II+ Xtreme)
  • 1.2 V SSTL (QDR IV, LPDDR3)
  • 1.2 V HSTL (RLDRAM3)

Margins improve when values of 50 ohms or higher are selected.