User Guide

NPM-10 (3595)
System Module CC Technical Documentation
Page 30 ©2004 Nokia Corporation Confidential Issue 2 03/2004
Ringer
A 16-mm speaker is used to generate alerting tones and melodies to indicate incoming
calls, as well as used to generate game sound, keypress, and warning tones for the user.
Alerting tones and MIDI melodies are generated by the speaker, which is controlled by a
sine driven output from the UEM and an external amplifier.
The speaker is electrically connected to the PWB by spring contacts (similar to that for
the internal earpiece).
Figure 7: Ringer interface
Accessories
NPM-10 (3595) supports Li-ion and NiMH batteries, “footprint” “C” from the DCT4
Lion/Janette battery program.
Table 24: Signals and Functions
Signal Name Pin Number Function
VBAT 1 Positive battery terminal
BSI 2 Battery capacity measurement
(fixed resistor, connected to GND, inside the battery pack)
BTEMP 3 Battery temperature measurement
(measured by ntc resistor connected to GND inside pack)
GND 4 Negative/common battery terminal
100k
HFCM
HF
XEARP
XEARN
UEM
INT
22p 22p
10
10
HEADINT
33n
22k
82k
IN-
SALT
Vo1
Vo2
42 ohm / 100 MHz
42 ohm / 100 MHz
UPP
GENIO14
IN+
BYPASS
1u
SHUTDOWN
External audio interface
Interface to
DC-out
Vdd
1u
GND
Vbat
0