User's Guide

LE910Cx HW User Guide
Doc#: 1VV0301298
Rev. 13.0 Page 76 of 124 2019-07-15
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