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RH-64
System module
External signals and connections
Signal
From
XMICP
HS/HF Mic
XMICN
XEARP
HS/HF
XEARN
EAR/
Amp.
INT
Switch
HEADINT
VCHARIN
Charger
GND
Battery connector
Internal, user-changeable batteries. Semi-fixed. Types: Li-Ion, NiMH. Interface, 4 terminals (VBATT, GND, BSI,
BTEMP) Janette battery interface is used. The battery type and size are defined in the next chapter.
Signal
From
GND
Global
VBAT
9243363 (Issue 1)
Table 18 System connector
To
Min
Nom
UEMC
2/60mV
Lite
diff
2/60mV
diff
UEMC
100 mV
Lite
diff
UEMC
0/2.7V
Lite
UEMC
11.1Vp
Lite
eak
7.0
8.4
VRMS
VRMS
Table 19 Battery IF
To
Min
Nom
Batt (-)
Batt (+)
3.1
Company Confidential
Copyright ©2005 Nokia. All Rights Reserved.
Max
Condi-tion
Analog
audio in
DC bias
2V2kohm
Ana in / 1k to
GND
Ana in
Dig in
16.9
Standard
Vpeak
7.9
VRMS
1.0
Apeak
9.2
Fast charger
VRMS
850 mA
GND
Max
Condi-tion
5.1
Nokia Customer Care
Note
Headset Mic bias and audio
signal 2mV nominal. HF Mic
signal 60mV nominal.
Differential symmetric
input.
Accessory detection by
bias loading
Hook interrupt by heavy
bias loading
Quasi-differential DC-
coupled earpiece/HF
amplifier signal to
accessory. DC biased to
0.8V
HS interrupt from bottom
connector switch when
plug inserted.
Vch from Charger
Connector, max 20V
GND from/to Charger
connector
Note
Global GND
Battery Voltage
Page 8–19
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