VCC = 3V3
LX2160A
OVDD=1V8
SDHC1_CMD
SDHC1_CLK
SDHC1_DS
SDHC1_VSEL
SDHC1_DAT0
SDHC1_DAT1
SDHC1_DAT2
SDHC1_DAT3
SDHC1_DAT4
SDHC1_DAT5
SDHC1_DAT6
SDHC1_DAT7
SDHC/SDXC
card slot
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
CMD
CLK
CD_B
WP
SDHC
Card
SDHC
card
LX2160A
CD_B (I2C2_SCL)
WP (I2C2_SDA)
EVDD=1V8 / 3V3
EVDD
CPLD and
voltage switch
3V3
OVDD = 1V8
0=3.3V
1=1.8V
PS_EVDD_VSEL
NOTE: The LX2160A does not
support EVDD at 3.3V, though
the board can provide it . For new
designs, a voltage translator such
as the NXP NVT4857UK should
be used. See LX216 0ARDB
board errata E-00008 for details.
Figure 16. eSDHC1 architecture
To avoid any damage to SDHC1 port pins due to a silicon erratum, follow these recommendations:
• Avoid unplugging the system to power it down; always use the power button on the front panel
• If cycling the AC power is needed, keep an SDHC card installed in the slot. Allow Linux to boot and configure EVDD to 1.8
V before removing AC power.
The LX2160ARDB eSDHC2 interface is connected to an eMMC device on the board. It supports either an FBGA169 device or
an FBGA153 device. By default, an FBGA169 eMMC device is supported. The table below shows the devices supported by the
eSDHC2 interface.
Table 13. Supported eMMC devices
Part number Manufacturer Memory size Notes
MTFC128GAJAECE-IT Micron 128 GB Supported by default
SDINADF4-128G Sandisk 128 GB
The figure below shows the eSDHC2 connections in the LX2160ARDB.
NXP Semiconductors
LX2160ARDB Functional Description
QorIQ LX2160A Reference Design Board Reference Manual, Rev. 4, 07/2020
Reference Manual 29 / 116
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