Specifications

SIM7912&SIM7906 Hardware Design V1.02
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SD_DATA0
49
DIO
P2
SDC data bit 0 or
eMMC
*
data bit 0
Required 50Ω impedance
If unused, keep it open.
SD_DATA1
50
DIO
P2
SDC data bit 1 or
eMMC data bit 1
SD_DATA2
47
DIO
P2
SDC data bit 2 or
eMMC data bit 2
SD_DATA3
48
DIO
P2
SDC data bit 3 or
eMMC data bit 3
SD_CMD
51
DIO
P2
SDC command output
SD_CLK
53
DO
P2
SDC clock output
SD_DET
52
DI,PU
P3
SD card insertion
detection
1.8V power domain,
If unused, keep it open.
Other interface
Pin name
Pin
No.
Electrical description
Description
Comment
GPIO_1
138
IO,PD
P3
General purpose
input/output ports
1.8V power domain,
If unused, keep it open.
GPIO_2
139
IO,PU
P3
GPIO_3
159
IO,PD
P3
GPIO_4
161
IO,PD
P3
GPIO_5
172
IO,PD
P3
USB_BOOT
140
DI
P3
Force the module into
emergency download
mode
1.8V power domain.
Active high.
If unused, keep it open.
SLEEP_IND
144
DO
P3
Sleep indication
1.8V power domain,
If unused, keep it open.
WAKEUP_IN
150
DI,PU
P3
Sleep mode control
1.8V power domain.
Pulled up by default.
Low level wakes up the
module.
If unused, keep it open.
W_DISABLE#
151
DI,PU
P3
Airplane mode control
1.8V power domain.
Pulled up by default.
In low voltage level, the
module will enter airplane
mode.
If unused, keep it open.
WLAN_PA_EN
209
DI,PD
P3
WLAN PA Enable
Default in LTE mode,
Pull-down to the GND.
Can switch to WLAN
mode.
Antenna Tuner control interface
Pin name
Pin
No.
Electrical description
Description
Comment
RFFE_CLK
71
DO
P3
RFFE serial interface for
1.8V power domain,