Emmc Flash; Emmc Flash Type; Signal Description; Sd Card - Enclustra Mars XU3 User Manual

2.17

eMMC Flash

The eMMC flash can be used to boot the PS, and to store the FPGA bitstream, ARM application code and
other user data.
2.17.1

eMMC Flash Type

Table 23 describes the memory availability and configuration on the Mars XU3 SoC module.
Module
MA-XU3 - R1
MA-XU3 - R2 and newer
MA-XU3 - R2 and newer
Table 23: eMMC Flash Type
Warning!
Other flash memory devices may be equipped in future revisions of the Mars XU3 SoC module. Please
check the user manual regularly for updates.
2.17.2

Signal Description

The eMMC flash signals are connected to the MIO pins 13-22 for 8-bit data transfer mode. The command
signal has a 4.7 k pull-up resistor to 1.8 V and the data lines have 47 k pull-up resistors to 1.8 V.
2.18

SD Card

An SD card can be connected to the PS MIO pins 45-51. The corresponding MIO pins are available on the
module connector. Information on this boot mode is available in Section 3.8.
Please note that external pull-ups are needed for SD card operation. Depending on the selected voltage for
VCC_CFG_MIO, a level shifter to 3.3 V may be required (some level shifters also have built-in pull-ups).
For booting from an Ultra High Speed (UHS) SD card, an SD 3.0 compliant level shifter is required on the
base board and VCC_CFG_MIO must be set to 1.8 V. Please note that this boot mode has not been tested,
but it may be supported in the future.
2.19

Gigabit Ethernet

A 10/100/1000 Mbit Ethernet PHY is available on the Mars XU3 SoC module, connected to the PS via RGMII
interface.
2.19.1

Ethernet PHY Type

Table 24 describes the equipped Ethernet PHY device type on the Mars XU3 SoC module.
D-0000-432-001
Flash Type
H26M41204HPR
H26M52208FPRI
EMMC16G-W525-X01U
31 / 52
Size
8 GB
16 GB
16 GB
Manufacturer
SK Hynix
SK Hynix
Kingston
Version 04, 25.07.2019