3. TECHNICAL BRIEF
- 30 -
3.2 13 MHz Clock (VCTCXO, X500)
The 13 MHz clock(X500) consists of a TCXO(Temperature Compensated Crystal Oscillator) which
oscillates at a frequency of 13 MHz. It is used within the SKY74400, analog base band chipset (U101,
AD6535), digital base band chipset (U102, AD6527B).
3.3 Switchplexer for Triband(FL500)
(1005)
GND
3
OUT
4
VCC
1
VCONT
2V75_VVCXO
13MHz
X500
2
10K
R505
C529
1u
1M
C530
1000p
AFC
Figure 3-3 VCTCXO CIRCUIT DIAGRAM
Vc1
Vc2
Vc3
Current
GSM850 -Tx
0.0-0.1V
0.0-0.1V
2.3-3.0V
10mA Max
GSM850 -Rx
0.0-0.1V
0.0-0.1V
0.0-0.1V
≈ 0mA
DCS/PCS-Tx
0.0-0.1V
2.3-3.0V
0.0-0.1V
10mA Max
DCS-Rx
0.0-0.1V
0.0-0.1V
0.0-0.1V
≈ 0mA
PCS-Rx
2.3-3.0V
0.0-0.1V
0.0-0.1V
10mA Max
Table 3-1 FEM CONTROL LOGIC
Z3X-BOX.COM
Содержание MG300d
Страница 1: ...Date January 2006 Issue 1 0 Service Manual Model MG300d Service Manual MG300d Z 3 X B O X C O M ...
Страница 23: ...3 TECHNICAL BRIEF 24 Figure 3 1 SKY74400 FUNCTIONAL BLOCK DIAGRAM Z 3 X B O X C O M ...
Страница 48: ...3 TECHNICAL BRIEF 49 3 7 CAMERA IC AIT813 U504 Figure 3 15 AIT813 APPLICATION BLOCKDIAGRAM Z 3 X B O X C O M ...
Страница 50: ...3 TECHNICAL BRIEF 51 3 8 MIDI IC YMU787 U703 Figure 3 24 YMU787 BLOCKDIAGRAM Z 3 X B O X C O M ...
Страница 70: ...4 TROUBLE SHOOTING 71 4 2 TX Trouble SKY74400 FEM 13Mhz OSCILLATOR Test Points Z 3 X B O X C O M ...
Страница 83: ...4 TROUBLE SHOOTING 84 4 6 LCD Trouble EMI FILTER CN600 Test Points Z 3 X B O X C O M ...
Страница 88: ...4 TROUBLE SHOOTING 89 Figure 1_Blue_RST Figure 2_DEBUG_Tx Rx Figure 3_PCM_SYNCS Tx Rx USCO Z 3 X B O X C O M ...
Страница 110: ...5 DOWNLOAD AND CALIBRATION 111 8 Push the START button Z 3 X B O X C O M ...
Страница 111: ...5 DOWNLOAD AND CALIBRATION 112 9 Phone test Finish is shown in below screen Z 3 X B O X C O M ...
Страница 112: ...6 BLOCK DIAGRAM 113 6 BLOCK DIAGRAM Z 3 X B O X C O M ...
Страница 113: ... 114 Z 3 X B O X C O M ...
Страница 124: ... 125 MG300d 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 125: ... 126 MG300d 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 133: ...10 STAND ALONE TEST 134 Figure 10 2 HW test setting Figure 10 3 Ramping profile Z 3 X B O X C O M ...
Страница 137: ... 138 Z 3 X B O X C O M ...
Страница 138: ... 139 Z 3 X B O X C O M ...
Страница 140: ... 141 12 EXPLODED VIEW REPLACEMENT PART LIST Z 3 X B O X C O M ...
Страница 141: ... 142 Z 3 X B O X C O M ...