
xE922-3GR Hardware User Guide
1VV0301272
Rev.0.8 2017-01-05
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
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Page 68 of 112
Main camera:
·
High resolution up to 13Mpixel /15 fps
·
4-lane MIPI CSI-2
·
up to 550Mbps/lane data rate ( limited by ISP throughput)
Secondary camera:
·
Low resolution up to 5Mpixel
·
1-lane MIPI CSI-2
·
up to 1Gbps/lane data rate
The cameras cannot be used simultaneously, only 1 at the time.
A dedicated CAM_I2C bus interfaces is featured to control the CMOS camera devices (external pullup
resistors to VAUX_1P8V required), as well as CAM_RESET and CAM_PD control pins for each CIF
interface.
The reference clock CAM_MCLK frequency is max 26MHz.
CAM1_FLASH and _TORCH enable flash and torch resp. of main camera.
In case the
Camera interface is not used, the above signals can be used as GPIO’s, in
terrupts or general
purpose I2C (in that case add external pullup resistors to 1V8_OUT)
Two voltage regulators can be used for camera device supply:
·
VAUX_1P8V
·
VAUX_2P85V
Both have a current rating of max 225mA.
Typically 1uF external decoupling capacitance to be added (additional to internal 1uF).
In case not applied for camera supply, both regulators can be used for other purpose.
Routing guide lines for the display MIPI-CSI-2 interface:
The next figure shows a typical signal traject with different sub trajects.