Nokia RM-609, Руководство по обслуживанию

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Charger interface
The charger interface is a 2 mm Dynamo charger plug. Older chargers with a 3.5 mm plug are supported via
the charger adapter cable CA-44.
Charging is controlled by EM ASIC. Additional external components are needed for EMC purposes, reverse
polarity and transient protection of the input to the baseband module.
Figure 49 Charger interface
User interface
Touch module
This phone uses Atmel capacitive touch solution.
The Atmel touch module is interfaced to I2C0 bus of RAPU. RAPU’s GenIO123 is used for Touch INT.
The Atmel touch module uses VAUX1 for its analogue supply and VIO for its digital supply. Communication
with RAPU is via Symbian I2C bus.
Whenever the user touches the touch screen, the controller raises an interrupt to RAPU which initiates I2C
transactions to identify the locations the user touches on the display.
Figure 50 Touch module interface
Proximity sensor and ambient light sensor
This phone uses a combined proximity and ambient light sensor called DiPro.
The proximity part of the device uses an external IR LED supplied by VBAT. The current this LED consumes is
controlled by DiPro and set using software. The interrupt output of DiPro changes state when the infra red
light from the LED is reflected back by a suitable reflective surface.
The ambient light sensor detects the level of ambient light and adjusts the display and key brightness
accordingly whenever the display is active. Covering this sensor results in dimmed display and key lights.
RM-609
System Module
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