Camera Interface; Back Camera Slider Detection Switch - Nokia 6680 RM-36 Service Manual

RM-36
System Module Nokia Customer Care

Camera interface

The device uses a Mirage- X camera module. Mirage-X is a 1.3Mpixel camera with sensor resolution of 1280 x
960. The following figure shows the block diagram where CCP bus is used to transfer image data from camera
to engine. Bi-directional control bus is an SW implemented I2C interface.
Camera regulator N1470 powers digital parts of camera. VAUX power rail is for powering analogue parts of the
camera.
CAMVCTRL signal (Vctrl) is used for activating the camera module. When Vctrl is turned on High level , the camera
module enters the operation mode. When Vctrl is turned on Low level, the camera module enters the power
off mode.
CAMCLK signal feeds system clock for camera module.
Figure 108 Block diagram of Mirage-X camera module

Back camera slider detection switch

The back camera and flash LED have a cover slider, which position is detected with a slider switch (slider sensor).
When the slider covers the back camera and flash LED (upper position), the slider switch is open circuit (not
pressed) and the Helen pin is connected to VIO. When the slider is slid down, the switch is pressed and it connects
the Helen pin GPIO53 to GND (typical 160mV) and activates the back camera application
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