6. BLOCK DIAGRAM
- 145 -
Main RF signal (black)
GSM TX :
GSM Tx RF signal
GSM RX :
GSM Rx RF signal
DCS TX :
DCS Tx RF signal
DCS RX :
DCS Rx RF signal
PCS TX :
PCS Tx RF signal
PCS RX :
PCS Rx RF signal
UMTS TX :
UMTS Tx RF signal
UMTS RX :
UMTS Rx RF signal
TX_I/Q :
I/Q for Tx of RF
RX_I/Q :
I/Q for Rx of RF
Control signal(red)
ANT_SEL 0,1,2 :
Ant Switch Module Mode Selection
(WCDMA, GSM Tx/Rx, DCS Tx/Rx, PCS Tx/Rx)
GSM PA_CTL signal
GSM_PA_BAND :
DCS or PCS /GSM Mode Selection
GSM_PA_EN :
Power Amp Gain Control Enable
GSM_PA_RAMP :
Power Amp Gain Control
GSM/DCS_VCO_EN
GSM_VCO_EN :
GSM band Tx VCO Enable
DCS_VCO_EN :
DCS band Tx VCO Enable
UMTS PA_CTL signal
PA_ON :
WCDMA Tx Power Amp Enable
PA_RANGE0 :
WCDMA Tx Power Amp Gain Control
TRK_LO_ADJ :
TCXO(19.2M) Control
UHF_VCO_BAND_SEL :
WCDMA(3G)/GSM(2G) VCO Band Selection of UHF VCO
Summary of Contents for U8500
Page 1: ...Date February 2006 Issue 1 0 Service Manual Model U8500 Service Manual U8500 ...
Page 20: ...3 TECHNICAL BRIEF 21 ...
Page 32: ...3 TECHNICAL BRIEF 33 Figure 3 5 6 1 GSM PA functional block diagram ...
Page 35: ...3 TECHNICAL BRIEF 36 Figure 3 5 10 1 Bluetooth system architecture ...
Page 50: ...3 TECHNICAL BRIEF 51 Figure 3 10 3 2 1 PM6650 Functional Block Diagram ...
Page 114: ...4 TROUBLE SHOOTING 115 Loud Speaker U502 U503 Amp ...
Page 118: ...4 TROUBLE SHOOTING 119 C200 C201 for MIC serial capacitor ...
Page 121: ...4 TROUBLE SHOOTING 122 Q404 Q403 Q402 VBATT GND ...
Page 143: ...6 BLOCK DIAGRAM 144 6 3 Interface Diagram U8500 Interface Diagram ...
Page 145: ... 146 ...
Page 154: ... 155 U8500 8 PCB LAYOUT ...
Page 155: ... 156 8 PCB LAYOUT U8500 ...
Page 156: ... 157 8 PCB LAYOUT ...
Page 157: ... 158 8 PCB LAYOUT ...
Page 158: ... 159 U8500 8 PCB LAYOUT ...
Page 159: ... 160 U8500 8 PCB LAYOUT ...
Page 166: ...9 CALIBRATION 167 Click START button U8500 U8500_ver1 1 U8500 U8500 Click U8500 ...
Page 167: ... 168 ...
Page 169: ... 170 ...
Page 194: ...Note ...
Page 195: ...Note ...