Magnetometer - Nokia RM-596 Service Manual

RM-596
System Module
Figure 63 Accelerometer

Magnetometer

3D magnetometer sensor (N1105) is connected to RAPU via two GENIOs ie Genio40 and Genio41 and I2C_0
bus. Power supply voltage is provided from VIO & VAUX1 output of EM ASIC. The magnetometer is used as a
city compass sensor. It detects the earth magnetic field density and composes bearing information for
navigation applications.
The magnetometer has the following features:
• 3-axis magnetometer device suitable for compass application
• Built-in A to D converter for magnetometer data out
• Self test function
• I2C bus interface
• Power modes: OFF mode, stand-by mode and active mode
• DRDY function for measurement data ready
• INT function to inform exceeding magnetic field strength threshold.
The operating temperature is -20°C to +85°C.
The operating supply voltages are:
• Analogue supply +2.4V to +3.6V
• Digital interface supply +1.70V to analogue supply voltage.
Issue 2 COMPANY CONFIDENTIAL Page 6 – 27
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