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3.21. Sensor Interfaces
SA800U-WF
has an integrated sensor subsystem called the Snapdragon sensor core, which is dedicated
to support low-power, always-on use cases. Snapdragon sensor core
sensors via I2C interface and SPI interface, and it supports various sensors such as acceleration sensor,
gyroscopic sensor, compass, optical sensor, temperature sensor.
be used for non-Snapdragon sensor core cases. They are dedicated for Snapdragon sensor core DSP.
Table 28: Pin Definition of Sensor Interfaces
Pin Name
SSC_SPI1_CS0
SSC_SPI1_CS1
SSC_SPI1_CS2
SSC_SPI1_CLK
SSC_SPI1_MOSI
SSC_SPI1_MISO
SSC_SPI2_CS
SSC_SPI2_CLK
SSC_SPI2_MOSI
SSC_SPI2_MISO
SSC_I2C1_SDA
SSC_I2C1_SCL
MAG_INT
MAG_DRDY_INT
GYRO_INT
ACCEL_INT
SA800U-WF_Hardware_Design
Pin No.
I/O
Description
J1-136
DO
Sensor core SPI1 chip select 0
J1-138
DO
Sensor core SPI1 chip select 1
J1-140
DO
Sensor core SPI1 chip select 2
J1-154
DO
Sensor core SPI1 clock
Sensor core SPI1 master-out
J1-152
DO
slave-in
Sensor core SPI1 master-in
J1-150
DI
salve-out
J1-141
DO
Sensor core SPI2 chip select
J1-145
DO
Sensor core SPI2 clock
Sensor core SPI2 master-out
J1-143
DO
slave-in
Sensor core SPI2 master-in
J1-147
DI
salve-out
J2-8
OD
Sensor core I2C1 data
J2-10
OD
Sensor core I2C1 clock
J1-133
DI
Magnetic sensor interrupt
J1-135
DI
Magnetic sensor DRDY interrupt
J1-137
DI
Gyroscopic sensor interrupt
J1-139
DI
Acceleration sensor interrupt
Smart Module Series
SA800U-WF Hardware Design
supports communication with
Snapdragon sensor core pins cannot
Comment
1.8 V power domain.
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