SIM5218E Hardware Design
3.16 Camera module interface
SIM5218E provides a camera module interface for supporting camera and video phone functions.
SIM5218E can support both digital and analog sensor(NTSC or PAL composite signals output),
YUV and RGB data format. When using analog sensor user needs to use AK8856(currently we
supported) to decode NTSC or PAL composite signals into digital data first and then transmit the
digital data into camera interface.
Note: When user use a YUV output sensor, user should connect the sensor data output
pin(OV7670 : data0~data7;
OV2640 and OV7725 : data2~data9) to SIM5218E
CAM_D2~CAM_D9.
The camera module interface consists of the following:
■
10 bit data bus for the pixel data information
■
Horizontal and vertical synchronization signals
■
2 wire I2C bus as a control path between the SIM5218E module device and the camera
module
Figure 25
：
Camera module interface
NOTE
：
The data and clock lines of camera are sensitive for the capacitors. Generally the
capacitance of the ESD component is too big, if those ESD components are put on to the
parallel line then the signal will fade a lot. In order to improve the ESD performance, some
10pF capacitor can be put on data and clock lines for ESD. If one like to choose smaller
capacitance ESD component, it should be smaller than 10pF.
SIM5218E_ Hardware Design_V1.06
2012.09.21
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Содержание SimCom SIM5218E
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