2.16.1 DDR4 SDRAM Type
Table 24 describes the memory availability and configuration on the Mercury+ XU8 SoC module.
Module SDRAM Type Density Configuration Manufact.
ME-XU8-D11E (extended) MT40A256M16GE-083E 4 Gbit 256 M × 16 bit Micron
ME-XU8-D11E (extended) H5AN4G6NAFR-UHC 4 Gbit 256 M × 16 bit SK Hynix
ME-XU8-D11E (industrial) MT40A256M16GE-083E-IT-B 4 Gbit 256 M × 16 bit Micron
ME-XU8-D11E (industrial) K4A4G165WE-BIRC 4 Gbit 256 M × 16 bit Samsung
ME-XU8-D12E (industrial) K4A8G165WB-BIRC 8 Gbit 512 M × 16 bit Samsung
Table 26: DDR4 SDRAM (PL) Types
Warning!
Other DDR4 memory devices may be equipped in future revisions of the Mercury+ XU8 SoC module.
Please check the user manual regularly for updates. Any parts with different speed bins or temperature
ranges that fulfill the requirements for the module variant may be used.
2.16.2 Signal Description
Please refer to the Mercury+ XU8 SoC Module FPGA Pinout Excel Sheet [4] for detailed information on the
DDR4 SDRAM connections.
2.16.3 Termination
Warning!
No external termination is implemented for the data signals on the Mercury+ XU8 SoC module. There-
fore, it is strongly recommended to enable the on-die termination (ODT) feature of the DDR4 SDRAM
device.
2.16.4 Parameters
Please refer to the Mercury+ XU8 SoC module reference design [2] for DDR4 settings guidelines.
The DDR4 SDRAM parameters to be set in the Vivado project are presented in Table 25.
The values given in Table 27 are for reference only. Depending on the equipped memory device on the
Mercury+ XU8 SoC module and on the DDR4 SDRAM frequency, the configuration may be different to the
one in the reference design. Please refer to the memory device datasheet for details.
D-0000-454-001 36 / 60 Version 06, 18.11.2019
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