External Memory Interfaces Intel® Stratix® 10 FPGA IP User Guide

ID 683741
Date 9/26/2022
Public

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8.1.5. Intel Stratix 10 EMIF IP QDR II/II+/II+ Xtreme Parameters: Board

Table 271.  Group: Board / Intersymbol Interference/Crosstalk
Display Name Description
Use default ISI/crosstalk values You can enable this option to use default intersymbol interference and crosstalk values for your topology. Note that the default values are not optimized for your board. For optimal signal integrity, it is recommended that you do not enable this parameter, but instead perform I/O simulation using IBIS models and Hyperlynx)*, and manually enter values based on your simulation results, instead of using the default values. (Identifier: BOARD_QDR2_USE_DEFAULT_ISI_VALUES)
Address and command ISI/crosstalk The address and command window reduction due to ISI and crosstalk effects. The number to be entered is the total loss of margin on both the setup and hold sides (measured loss on the setup side + measured loss on the hold side). Refer to the EMIF Simulation Guidance wiki page for additional information. (Identifier: BOARD_QDR2_USER_AC_ISI_NS)
CQ/CQ# ISI/crosstalk CQ/CQ# ISI/crosstalk describes the reduction of the read data window due to intersymbol interference and crosstalk effects on the CQ/CQ# signal when driven by the memory device during a read. The number to be entered is the total loss of margin on the setup and hold sides (measured loss on the setup side + measured loss on the hold side). Refer to the EMIF Simulation Guidance wiki page for additional information. (Identifier: BOARD_QDR2_USER_RCLK_ISI_NS)
Read Q ISI/crosstalk Read Q ISI/crosstalk describes the reduction of the read data window due to intersymbol interference and crosstalk effects on the CQ/CQ# signal when driven by the memory device during a read. The number to be entered is the total loss of margin on the setup and hold sides (measured loss on the setup side + measured loss on the hold side). Refer to the EMIF Simulation Guidance wiki page for additional information. (Identifier: BOARD_QDR2_USER_RDATA_ISI_NS)
K/K# ISI/crosstalk K/K# ISI/crosstalk describes the reduction of the write data window due to intersymbol interference and crosstalk effects on the K/K# signal when driven by the FPGA during a write. The number to be entered is the total loss of margin on the setup and hold sides (measured loss on the setup side + measured loss on the hold side). Refer to the EMIF Simulation Guidance wiki page for additional information. (Identifier: BOARD_QDR2_USER_WCLK_ISI_NS)
Write D ISI/crosstalk Write D ISI/crosstalk describes the reduction of the write data window due to intersymbol interference and crosstalk effects on the signal when driven by driven by the FPGA during a write. The number to be entered is the total loss of margin on the setup and hold sides (measured loss on the setup side + measured loss on the hold side). Refer to the EMIF Simulation Guidance wiki page for additional information. (Identifier: BOARD_QDR2_USER_WDATA_ISI_NS)
Table 272.  Group: Board / Board and Package Skews
Display Name Description
Package deskewed with board layout (Q group) If you are compensating for package skew on the Q bus in the board layout (hence checking the box here), please include package skew in calculating the