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3. TECHNICAL BRIEF
3.3 13 MHz Clock
The 13 MHz clock (X400) consists of a TCXO (Temperature Compensated Crystal Oscillator)
which oscillates at a frequency of 13 MHz. It is used within the Si4205, analog base band
chipset (U101, AD6521), digital base band chipset (U102, AD6525), and MIDI (U200) chipset.
Figure 3-6. VCTCXO circuit diagram
3.4 Power Supplies for RF Circuits
Two regulators are used for RF circuits. One is MIC5255 (U402), and the other is one port of
ADP3522 (U301).
MIC5255 (U402) supplies power to transceiver (SI4205, U401).
One port of ADP3522 supplies power to VCTCXO (X400).
Main power (VBAT) from battery is used for PAM (RF3133, U400) because PAM requires high
power.
Table 3-2. Power suppliers for RF circuits.
Figure 3-7. U402 circuit diagram
(1608)
100
R415
2V75_VTCXO
C435
2.2u
R414
15K
C432
X400
OUT
CTL
VCC
GND
1
2
3
4
13MHz
1000p
AFC
Supplier
Voltage
Powers
Enabled signal
U402 2.85V
U401
RF_EN
U301
2.75V
X400
Battery 3.4~4.2V
U400
R418
NA
R419
0
0.01u
C437
10u
C438
IN
5
OUT
U402
MIC5255-2.85BM5
4
BYP
EN
3
GND
2
1
VBAT
VRF
10u
C436
RF_EN
CLKON
Содержание C3100
Страница 1: ...Service Manual Model C3100 Service Manual C3100 P N MMBD0033001 Date June 2004 Issue 1 0 ...
Страница 51: ...Graph 4 15 EGSM TX 50 VCX VC2 VCX VC2 4 TROUBLE SHOOTING Graph 4 14 DCS TX ...
Страница 67: ...5 DISASSEMBLY INSTRUCTION Figure 5 1 Figure 5 2 66 5 DISASSEMBLY INSTRUCTION ...
Страница 68: ... 67 5 DISASSEMBLY INSTRUCTION Figure 5 3 Figure 5 4 ...
Страница 69: ... 68 Figure 5 5 5 DISASSEMBLY INSTRUCTION ...
Страница 70: ... 69 5 DISASSEMBLY INSTRUCTION Figure 5 6 Figure 5 7 1 3 2 4 1 2 3 ...
Страница 71: ... 70 Figure 5 8 Figure 5 9 5 DISASSEMBLY INSTRUCTION 4 2 3 1 2 1 ...
Страница 72: ... 71 5 DISASSEMBLY INSTRUCTION Figure 5 10 ...
Страница 83: ... 82 7 BLOCK DIAGRAM 7 BLOCK DIAGRAM Power supply ...
Страница 90: ... 89 9 PCB LAYOUT 9 PCB LAYOUT ...
Страница 91: ... 90 9 PCB LAYOUT ...
Страница 98: ... 97 11 3 HW Test Software for Standalone Test Setup 11 STAND ALONE TEST ...
Страница 100: ... 99 Tx Stand alone Test Setting 11 STAND ALONE TEST ...
Страница 102: ... 101 Rx Stand alone Test Setting 11 STAND ALONE TEST ...
Страница 104: ... 103 12 3 Equipment Setup Figure 12 1 Equipment Setup 12 AUTO CALIBRATION ...
Страница 107: ... 106 12 AUTO CALIBRATION ...
Страница 108: ... 107 13 EXPLODED VIEW REPLACEMENT PART LIST 13 EXPLODED VIEW REPLACEMENT PART LIST 13 1 Exploded View ...
Страница 109: ... 108 13 EXPLODED VIEW REPLACEMENT PART LIST ...