User's Guide

LE910Cx HW User Guide
Doc#: 1VV0301298
Rev. 13.0 Page 76 of 124 2019-06-07
Table 29 lists the LE910Cx SD card signals.
Table 29: SD Card Signals
PAD Signal I/O Function Type Comments
J12 SD/MMC_CMD O SD command 1.8/2.95V
F12 SD/MMC_CLK O SD card clock 1.8/2.95V
E12 SD/MMC_DATA0 I/O SD Serial Data 0 1.8/2.95V
G12 SD/MMC_DATA1 I/O SD Serial Data 1 1.8/2.95V
K12 SD/MMC_DATA2 I/O SD Serial Data 2 1.8/2.95V
H12 SD/MMC_DATA3 I/O SD Serial Data 3 1.8/2.95V
G13 SD/MMC_CD I SD card detect input 1.8V Active Low
F13 VMMC - Power supply for MMC
card pull-up resistors
1.8/2.95V Max Current
is 50mA
Figure 16 shows the recommended connection diagram of the SD interface.
Figure 16: SD/MMC Interface Connectivity
SD/MMC_DATA2
SD/MMC_DATA3
SD/MMC_CMD
SD/MMC_CLK
SD/MMC_DATA0
SD/MMC_DATA1
LE910Cx
SD/MMC Interface
SD/MMC_CD
DATA2
DATA3
CMD
VDD
VSS
DATA0
DATA1
MicroSD
MMC_CD
GND
GND
10
K
10
K
10
K
10
K
10
K
C=100nF
GND
External PS 3V
VMMC