User Guide

Figure 129 Led driver block

Slide switch

This is a slide phone that wakes up when it slides open. A switch detects the position of the slide. It is

implemented with a Hall IC and a magnet.

The signal from the Hall IC is connected to the analouge keyboard input (AuxDet) in the UEMEK, as this is also

an interrupt input. The Hall solution requires a magnet, which is placed on top of the Hall IC, and is moved away

from the sensor with the moving mechanics, making a change of the magnetic field.

The output from the Hall IC is high (2.78 V) when the slide is open.

Audio concept

The audio concept includes an earpiece, a microphone, and a bottom connector for headset and integrated

handsfree (IHF). Audio is based on Tiku, UEMEK and a discrete amplifier for the handsfree speaker, the boomer.

RM-13/33

Nokia Customer Care System Module Description

Page 8–16 Company Confidential 9240218 (Issue 1)