
Pin #
Signal
Notes
14
HSEAR RP
Positive audio out signal (right
channel)
Audio concept
The audio concept includes an earpiece, a microphone, and a Pop-Port
TM
connector for headset and integrated
handsfree (IHF). Audio is based on ASIC's UPP_WD2, UEMEK and a discrete amplifier for the handsfree speaker
known as “boomer”.
Figure 174 Audio blocks
Between UPP_WD2 and UEMEK, the audio signals are transferred in digital format using signals MICDATA and
EARDATA. Ringing tones and warning/info tones are to be produced to the IHF speaker.
Earpiece
The earpiece used in this mobile is an 8-mm Pico earpiece. It has 32 Ω continuous impedance and continuous
power 8 mW. It is driven by differential signals from UEMEK (EARP & EARN). It makes contact with the PWB via
spring contacts.
RM-51
System module and user interface
Nokia Customer Care
9238460 (Issue 1)
Company Confidential
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