P0103 Datasheet, PDF (20/50 Pages) AEL Crystals Ltd – Introduction of the VEEK-MT

CAMERA_FVAL
CAMERA_RESET_n
CAMERA_SCLK
CAMERA_TRIGGER
CAMERA_SDATA
CAMERA_XCLKIN
D27
F27
AE26
E28
AE27
G23
Frame valid
Image sensor reset
Serial clock
Snapshot trigger
Serial data
External input clock
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
3.5 Using the Digital Accelerometer
The VEEK-MT is equipped with a digital accelerometer sensor module. The ADXL345 is a small,
thin, ultralow power assumption 3-axis accelerometer with high resolution measurement.
Digitalized output is formatted as 16-bit twos complement and could be accessed either using SPI
interface or I2C interface. This chip uses the 3.3V CMOS signaling standard. Main applications
include medical instrumentation, industrial instrumentation, personal electronic aid and hard disk
drive protection etc. Some of the key features of this device are listed below. For more detailed
information of better using this chip, please refer to its datasheet which is available on
manufacturer’s website or under the /datasheet folder of the system CD.
Table 3-4 contains the pin names and descriptions of the G sensor module.
Signal Name
FPGA Pin No.
Description
I/O Standard
GSENSOR_INT1
G27
Interrupt 1 output
2.5V
GSENSOR_INT2
G28
Interrupt 2 output
2.5V
GSENSOR_CS_n
F28
Chip Select
2.5V
GSENSOR_ALT_ADDR K27
I2C Address Select
2.5V
GSENSOR_SDA_SDI_SDIO K28
Serial Data
2.5V
GSENSOR_SCL_SCLK M27
Serial Communications Clock 2.5V
3.6 Using the Ambient Light Sensor
The APDS-9300 is a low-voltage digital ambient light sensor that converts light intensity to digital
signal output capable of direct I2C communication. Each device consists of one broadband
photodiode (visible plus infrared) and one infrared photodiode. Two integrating ADCs convert the
photodiode currents to a digital output that represents the irradiance measured on each channel. This
digital output can be input to a microprocessor where illuminance (ambient light level) in lux is
derived using an empirical formula to approximate the human-eye response. For more detailed
information of better using this chip, please refer to its datasheet which is available on
manufacturer’s website or under the /datasheet folder of the system CD.
VEEK-MT User Manual
17
www.terasic.com
May 20, 2014