Overlapping footprints
Allows either FBGA169
or FBGA153 (not both)
VDD = 3V3
from CPLD
eMMC
FBGA153
LX2160A
OVDD=1V8
SDHC2_CMD
SDHC2_CLK
SDHC2
_
DS
SDHC2_DAT0
SDHC2_DAT1
SDHC2_DAT2
SDHC2_DAT3
SDHC2_DAT4
SDHC2_DAT5
SDHC2_DAT6
SDHC2_DAT7
eMMC
FBGA169
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
CMD
CLK
DS
RST_B
RST_EMMC_B
OVDD = 1V8
Figure 17. eSDHC2 architecture
2.8 XSPI interface
The LX2160ARDB octal serial peripheral interface (XSPI) supports two onboard XSPI flash memories for boot image and one
QSPI emulator for offboard QSPI emulation. The XSPI chip-select signals from the processor are driven to the XSPI memories
or the QSPI emulator through two high-speed multiplexers. The XSPI interface supports Single/Dual/Quad/Octal mode data
transfer (1/2/4/8 bidirectional data lines).
The figure below shows the LX2160ARDB XSPI connections.
QSPI emulator connector
Samtec
0.05" 2x10 “ISP-B”
OVDD
XSPI
Micron 64 MB
MT35XU512ABA1G12
PBGA24
XSPI
Micron 64 MB
MT35XU512ABA1G12
PBGA24
LX2160A
HS mux
1:4
(2x)
CFG_XSPI_MAP[3:0]
XSPI_A_CS0_B
VB_XSPI_CS1_B
VB_XSPI_EMU_B
From CPLD
VB_XSPI_CS0_B
XSPI_A_CS1_B
XSPI_A_D[0:7]
XSPI_A_DQS
XSPI_A_SCK
TFM-110-02-S-D-SN-K-TR
Figure 18. XSPI architecture
The table below shows the devices attached to the LX2160ARDB XSPI interface.
NXP Semiconductors
LX2160ARDB Functional Description
QorIQ LX2160A Reference Design Board Reference Manual, Rev. 4, 07/2020
Reference Manual 30 / 116
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