Pin Description - SimCom SIM5215 Hardware Design

34 SD_CLK
35 SD_CMD
2.2

Pin description

Table 4: Pin description
Pin name
Power Supply
VBAT
VRTC
VREG_AUX
GND
Power on/off
POWER_ON
Audio interface
MIC_P
MIC_N
HP_MICP
EAR_P
EAR_N
HPR
HPL
SPK_P
SPK_N
USIM interface
V_USIM
USIM_DATA
USIM_CLK
USIM_RESET
SDIO interface
SD_CLK
SD_CMD
SD_DATA0
SD_DATA1
SD_DATA2
SIM5215&SIM5216_Hardware Design_V2.02
I/O Description
Power supply voltage
I/O Power supply for RTC
O LDO power output
Ground
POWER_ON should be pulled low at
I least 64ms to power on or 500ms to
power off the module.
I Differential audio input
I Single audio input
Positive and negative voice-band
O
Differential output
Auxiliary right channel and left
O
channel voice-band output
O Loud Speaker Differential Output
Voltage Supply for SIM card
O
Support 1.8V or 3V SIM card
I/O SIM Data Output/Input
O SIM Clock
O SIM Reset
O SDIO clock
I/O SDIO command
I/O SDIO data
I/O SDIO data
I/O SDIO data
37 SD_DATA1
36 SD_DATA0
16
Smart Machine Smart Decision
Comment
If it is unused, keep open.
If it is unused, connect to
ground through a 100N
capacitor.
If these pins are unused，
keep open.
All signals of
interface should
protected against
ESD/EMC.
If it is unused, keep open.
2012-08-31
SIM
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