Signal Description; Termination; Parameters - Enclustra Mars XU3 User Manual

Warning!
Other DDR4 memory devices may be equipped in future revisions of the Mars XU3 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.
In custom configurations up to 4 GB of SDRAM memory may be equipped on the module.
2.15.2

Signal Description

Please refer to the Mars XU3 SoC Module FPGA Pinout Excel Sheet [4] for detailed information on the DDR4
SDRAM connections.
2.15.3

Termination

Warning!
No external termination is implemented for the data and command signals on the Mars XU3 SoC
module. Therefore, it is strongly recommended to enable the on-die termination (ODT) feature of the
DDR4 SDRAM device.
2.15.4

Parameters

Please refer to the Mars XU3 SoC module reference design [2] for DDR4 settings guidelines.
The DDR4 SDRAM parameters to be set in the Vivado project are presented in Table 21. The values given in
Table 21 are for reference only. Depending on the equipped memory device on the Mars XU3 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.
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