Sd Card Interface (J502) - Quectel SC20-EL Manual

3.5. SD Card Interface (J502)

Smart EVB provides an SD card interface (J502) for customers to test the module's SD card interface.
The following figure shows the simplified interface schematic for SD card interface on Smart EVB.
SD_DATA2
SD_DATA3
SD_CMD
R10
SD_CLK
SD_DATA0
R12
SD_DATA1
R13
SD_DET
27pF
Module
Figure 13: Simplified Interface Schematic for SD Card Interface
Smart_ EVB_User_Guide
J302
Figure 12: Camera Interfaces with Cameras Assembled
LDO5_1V8
R1 R2 R3
120K
NM_51K NM_51K NM_10K NM_51K NM_51K
R7
33R
R8 33R
R9 33R
33R
R11
33R
33R
1K
27pF
27pF
D1 D2 D3
27pF
SD_LDO11
SD_LDO12
R4 R5 R6
27pF
27pF
C1
D4 D5 D6 D7
2.2 uF
Smart LTE Module Series
Smart EVB User Guide
J301
1
P1-DAT2
2
P2-CD/DAT3
3
P3-CMD
4
P4-VDD
5
P5-CLK
6
P6-VSS
7
P7-DAT0
8
P8-DAT1
9
DETECTIVE
10
GND
D8
C2
11
GND
12
33pF
GND
13
GND
SD Card Connector
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