Article ID: 000077293 Content Type: Troubleshooting Last Reviewed: 11/24/2011

DDR3 ODT Fails in Simulation with Denali for DDR2 and DDR3 SDRAM Controller with UniPHY and DDR3 SDRAM Controller with ALTMEMPHY IP

Environment

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Critical Issue

Description

For memory interfaces created with version 11.0 or later of the high-performance controller II (HPC II), DDR3 ODT failures can occur in simulation with Denali.

Resolution

There are two possible workarounds for this issue:Option 1: Open the alt_mem_ddrx_controller_st_top.v file and add 1 (clk) to the equation used to derive the localparams CFG_EXTRA_CTL_CLK_RD_TO_WR_DIFF_CHIP and CFG_EXTRA_CTL_CLK_WR_TO_RD_DIFF_CHIP.Option 2: Open the generated file <variation_name>_alt_mem_ddrx_controller_top.v and change the localparam CFG_READ_ODT_CHIP value to ‘h0 .

Related Products

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