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Siemens C45 User Manual
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V1.0
Page
38
o
f
46
ICM MP CCQ S
T
C45, M50 AND M
T
50
Compan
y
Confidential © Cop
y
right Siemens
AG
05/02
7
Acoustics
7.1
General
T
he Electro-Acoustic co
m
ponents are:
a)
T
he Vibra
b)
T
he Microphone
c)
T
he Loudspea
k
er/Ringer
S
c
h
a
l
k
e
A
sic
M
UX
P
W
M (50
%
d
u
t
y
c
y
cl
e)
EPN2
EP
P2
EPN1
EP
P1
P
MB68
50
EG
o
l
d+
16Ω
AU
D
O
N
AU
D
O
P
I/O
-
c
o
nn
ect
or
A1
A2
B1
B2
C1
C2
R
I
N
G
IN
32Ω
Hea
d
set
M
I
C
P2
M
I
C
N2
M
I
C
P1
M
I
C
N1
I
n
ter
n
al
s
p
ea
k
er
I
n
ter
n
al
m
icr
o
ph
o
ne
M
46
:
Au
di
o
-
co
n
ce
pt
37
39
Table of Contents
Default Chapter
2
Table of Contents
2
1 List of Available Level 2,5E Parts C45, M50 + Mt50
4
2 Required Equipment for Level 2,5E
5
3 Required Software for Level 2,5E C45, M50 and Mt50
5
4 Radio Part
6
Power Supply RF-Part
7
Frequency Generation
9
Synthesizer: the Discrete VCXO (26Mhz)
9
Synthesizer: LO1
11
Synthesizer: LO2
13
Synthesizer: PLL
14
Antenna Switch (Electrical/Mechanical)
15
Receivers
17
Receiver: GSM900/1800 -Filter to Demodulator
17
IC Overview
19
Transmitter
20
Transmitter: Modulator and Up-Conversion Loop
20
Transmitter: Power Amplifier
21
5 Power Supply
22
Overview and Voltages
22
Power Supply ASIC
23
Battery and Charging
26
Battery
26
Charging Concept
26
6 Logic Part
28
Overview Logic/Control
28
EGOLD (PMB6850) V2.X
30
EGAIM Inside the EGOLD
31
Tasks of the EGAIM Inside the EGOLD
32
Real Time Clock (Integrated in the EGOLD+)
35
Sram
36
Flash
37
7 Acoustics
38
General
38
Vibra
39
Microphone and Loudspeaker (Ringer)
40
Loudspeaker
40
Microphone
40
Loudspeaker/Ringer
41
8 Illumination
42
9 Sim-Card and Connectors
43
SIM-Card
43
Display Connector
44
I/O-Connector
45
Battery Connector
46
4
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Siemens C45 Specifications
General
Brand
Siemens
Model
C45
Category
Cell Phone
Language
English
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