1.4. External Memory Interface (EMIF) Maximum Frequency Specification...

Cyclone® V GX, GT, and E Device Errata

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ID 683015

Date 8/01/2023

Version current

Public

To achieve timing closure, the EMIF maximum frequency specification has been updated in the table below.

Table 1. Cyclone V EMIF Maximum Frequency Specification Update
Note: In this table, the stated performances apply to component topology only. The DIMM topology is not supported on the hard controller.

Note: For changes to other variants and slower speed grades, refer to the External Memory Interface Spec Estimator.
Device	Speed Grade	Memory Type	Memory Topology	Depth Expansion	Interface Type	Original Maximum Spec (MHz)	Updated Maximum Spec (MHz)
Cyclone V GX/E	-C6	DDR2	Component	2 Chip Selects	Hard Controller	400	333
Cyclone V GX/GT/E	-A7	DDR2	Component	1 Chip Select	Hard Controller	400	333
Cyclone V GX/GT/E	-A7	DDR2	Component	2 Chip Selects	Hard Controller	333	300

Affects: Cyclone® V GX, GT, and E devices

Status: No planned fix