Type: Answers

Type: Errata

Area: EMIF

Area: Intellectual Property



Hard Memory Interface May Fail VHDL Simulation in Arria V and Cyclone V Devices

Description

This problem affects DDR2 and DDR3, LPDDR2, QDR II, RLDRAM II, and RLDRAM 3 products.

Hard memory interfaces on Arria V and Cyclone V devices may fail VHDL simulation with NC Sim or Aldec Riviera-PRO.

Workaround/Fix

The workaround for this issue is to open the generated altera_mem_if_hard_memory_controller_top_arriav.sv file and remove the following parameters:

VECT_ATTR_COUNTER_ONE_MASK

VECT_ATTR_COUNTER_ONE_MATCH

VECT_ATTR_COUNTER_ZERO_MASK

VECT_ATTR_COUNTER_ZERO_MATCH

VECT_ATTR_DEBUG_SELECT_BYTE

This issue will be fixed in a future version.