Smart Machine Smart Decision
SIM5360_Hardware Design_V1.01
2013-11-22
31
controller is used, the initialization procession for SD or MMC cards is different. SIM5360 will detect
which card is inserted automatically.
3.4.1
Pin Description
Table 10: Electronic characteristic
Pin name
2.85V mode
Min
Typ
Max
SD_DATA0
2.7
2.85
3.0
SD_DATA1
2.7
2.85
3.0
SD_DATA2
2.7
2.85
3.0
SD_DATA3
2.7
2.85
3.0
SD_CLK
2.7
2.85
3.0
SD_CMD
2.7
2.85
3.0
VREG_SD
2.7
2.85
3.0
Table 11: Pin description
3.4.2
Design guide
The module provides a LDO named VREG_SD for SD card power supply. The LDO is 2.85V by default,
capable of 300mA. Data lines should be pulled up to VREG_SD by 10K resistors. ESD/EMI components
should be arranged beside SD card socket. Refer to the following application circuit.
Pin name
Pin No.
Function
SD_DATA0
22
SD/MMC card data0
SD_DATA1
23
SD card data1
SD_DATA2
24
SD card data2
SD_DATA3
25
SD card data3
SD_CLK
26
SD card clock
SD_CMD
21
SD card command
VREG_SD
44
SD card power