Installation Instructions

SIM5216A _HD_V1.02 Hardware Design

SIM5216A _HD_V1.02 26.08.2010

Figure 24：ADC interface used for temperature sampling reference circuit

3.15 LDO power output

SIM5216A has a LDO power output, it is PIN 40, namely VREG_AUX. This LDO default

output voltage is 2.85V, and the driver current is rated for 250mA. This LDO could be used as a

power supply for SD card, and the SD card data/command lines can also been pulled up by it. One

can switch the LDO by AT+CVAUXS also one can set the LDO’s output voltage by

AT+CVAUXV.

NOTE

：

SIM5210 has no such pin. This is a difference between SIM5216A and SIM5210.

3.16 Camera module interface

SIM5216A provides a camera module interface for supporting camera and video phone functions.

If you do not use the camera interface, you can configure these pins as configurable GPIOs. Please

refer the AT command Document (AT+CCGSWT).

SIM5216A support both digital and analog sensor (NTSC or PAL composite signals output), YUV

and RGB data format. When using analog sensor, you need 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 you use a YUV output sensor, you should connect the sensor data output

pin(OV7670 : data0~data7; OV2640 and OV7725 : data2~data9) to SIM5216A

CAM_D2~CAM_D9.

The camera module interface consists of the following: