Vibra circuitry
The vibra circuitry is used for the vibra-alarm function.
The vibra motor is connected to the EM ASIC (N2200) VibraP and VibraN Pulse Width Modulated (PWM) outputs.
Figure 67 Vibra circuitry
Pop-port
TM
connector
Pop-Port
TM
connector provides a fully differential 4–wire stereo line-level output connection and fully
differential 2-wire mono line-level or microphone level input connection.
The handsfree driver in Retu is meant for the headset.
The output is driven in a fully differential mode. In the fully differential mode, the handsfree pin is the
negative output and the HFCM pin is the positive output. The gain of the handsfree driver in the differential
mode is 6 dB.
The earpiece and headset signals are multiplexed so that the outputs cannot be used simultaneously.
Figure 68 System connector pin layout
Table 17 Pop-Port
TM
pin and signal table
Pin #/ Signal
name
Signal
description
Spectral range Voltage/
Current levels
Max or
nominal serial
impedance
Notes
1/ Charge V Charge DC 0-9V/ 0.85A
2/ GND Charge GND - 0.85A 100mΩ (PWB+
conn.)
3/ ACI ACI 1kbits/s Digital 0 / 47Ω Insertion &
removal
detection
2.5-2.78V
RM-123; RM-145
Nokia Customer Care System Module
Page 8 –18 COMPANY CONFIDENTIAL Issue 1
Copyright © 2006 Nokia. All rights reserved.
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