Accelerometer; I/O Expander - Nokia MOBILE TERMINAL Service Manual

RM-356
System Module and User Interface

Accelerometer

The 3-dimensional accelerometer measures the static acceleration of gravity in tilt-sensing applications, as
well as dynamic acceleration resulting from motion or shock.
The features using accelerometer in RM-356 are:
• Turn-to-mute (ringing tone & alarm)
• UI auto rotate
• Gaming control
The accelerometer (N6501) is connected to I2C. One GENIO is reserved for interrupt.

I/O Expander

I/O Expander is used for control signals that are not time critical, such as for keyboard inputs, enable & reset
signals etc. It is connected to the I2C bus, and has its own interrupt. PURX is used as I/O Expander's reset. I/
O Expander is powered from VIO 1.8V.
Issue 1
Figure 58 Accelerometer schematics
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