Figure 49 External earpiece and microphone circuitry (AV connected on the right)
Vibra circuitry
Vibra is used for the vibra alarm function.
The vibra motor is connected to the Avilma ASIC VibraP and VibraN Pulse Width Modulated (PWM) outputs.
AV connector
The AV connector consists of single ended mono or stereo audio output and mono audio input.
The handsfree driver in Avilma is meant for the headset.
Signal name
HSMIC
HS mic audio
input
HSEARL
HS EAR L audio
output
HSEARR
HS EAR R audio
output
Page 6 –22
Table 15 AV interface electrical characteristics
Function/
Min
Parameter
-
-
-
COMPANY CONFIDENTIAL
Copyright © 2007 Nokia. All rights reserved.
Figure 50 Vibra circuitry
Typ
Max
-
1.3 V
-
2 V
pp
-
2 V
pp
System Module and User Interface
Unit
V
Max. negative level -
pp
0.7 V
V
SPR requirement
V
SPR requirement
RM-243
Notes
Issue 1