Sd Card Interface (J701) - Quectel UMTS Module Series User Manual

4.7. SD Card Interface (J701)

The UMTS&LTE EVB provides an SD card interface that supports maximally 32GB micro SD card. With
the SD card interface, customers can easily enhance the memory capacity of modules.
The following figure shows the simplified interface schematic for J701.
Figure 22: Simplified Interface Schematic for SD Card Interface J701
UMTS&LTE_EVB_User_Guide
29
SD1_DATA2
28
SD1_DATA3
33
SD1_CMD
32
SD1_CLK
31
SD1_DATA0
30
SD1_DATA1
J101
Figure 23: Pin Assignments of J701
UMTS/HSPA/LTE Module Series
VDD_3V3
1
DAT2
2
CD/DAT3
3
CMD
4
VDD
SD card
5
CLK
connector
6
VSS
7
DAT0
8
DAT1
GND
J701
1 2 3 4 5 6 7 8
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