Telit GE864 and GC864
Product Description
80273ST10008A Rev. 3 - 10/02/06
Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved
page 21 of 72
2.17 Camera compatibility (EASY CAMERA)
The
GE864 / GC864
provides a direct support for the camera whose characteristics are the following:
Model: TRANSCHIP
TC5747
Technology:
CMOS COLOR camera
Max picture size:
VGA 640x480 pixels
Output format:
JPEG
Sensitivity:
4V/lux-sec (including gain)
The camera will be directly managed by the hardware/software with some interface circuitry,
providing a custom AT command interface to operate with it.
The camera interface requires the pins and GPIOs:
Signal
GE864 ball
GC864 pin
CAM_SDA D7
36
CAM_SCL C6
35
CAM_CLK F8
44
CAM_ON K11
67
CAM_RST C9
76
When the camera is activated, then these pins are not accessible as GPIO.
The AT commands of the module allows to take a snapshot and successively download it through
the serial line in various formats.
2.18 Converters
2.18.1 ADC
Converter
The on board A/D are 11-bit converter. They are able to read a voltage level in the range of 0÷2
volts applied on the ADC pin input, store and convert it into 11 bit word.
Min Max
Units
Input Voltage range
0
2
Volt
AD conversion
-
11
bits
Resolution -
<
1
mV
Sampling rate
1 (idle)
60 (on traffic)
secs
2.18.2 DAC
Converter
The on board DAC is a 10 bit converter, able to generate a analogue value based a specific input
in the range from 0 up to 1023. However, an external low-pass filter is necessary. See the HW
User Guide for the details.
