3. TECHNICAL BRIEF
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3.10 H/W Sub System
3.10.1 RF Interface
A. RTR6250(WCDMA_Tx, GSM_Tx/Rx)
MSM6250 controls RF part(RTR6250) using these signals.
• SBST,SBDT,SBCK : SBI I/F signals for control Sub-chipset
• PAON : Power AMP on RF part
• RX_I/Q,TX_I/Q : I/Q for T/Rx of RF
• TX_AGC_ADJ : control the gain of the Tx signal prior to the power amplifier
C238
0.1u
R208
51K
0.01u
C226
R203
51K
C225
33n
R219
51K
Y25
Q_IM_CH0
Y26
Q_IP_CH0
W21
I_IP_CH0
W26
I_IP_CH1(Reserved)
V21
I_IM_CH0
V25
I_IM_CH1(Reserved)
U21
Q_IM_CH1(Reserved)
U23
Q_IP_CH1(Reserved)
T23
ANT_SEL1_N_GPIO[10]
P26
GSM_PA_PWR_CTL
R19
ANT_SEL0_N_GPIO[9]
TX_AGC_ADJ
L19
RINGER_GPIO[18]
GRFC[11]_GPIO[80]
K23
GRFC[13]_GPIO[82]
L14
J25
GRFC[14]_GPIO[83]
J26
GRFC[12]_GPIO[81]
K19
H14
TRK_LO_ADJ
H15
TRST_N
H16
RTCK
H17
PA_RANGE[0]_GP_PDM[1]
SBST1_GPIO[93]
H18
BT_CLK_GPIO[25]
H10
TX_VCO_1_EN_N_GPIO[7]
H12
GRFC[10]_TX_ON
BT_SBST_GPIO[24]
G21
BT_TX_RN_N_GPIO[21]
G23
F15
TMS
F16
TDO
F18
TCXO_EN_GPIO[94]
F23
D9
GSM_PA_BAND_GPIO[5]
E25
BT_SBDT_GPIO[22]
E26
BT_SBCK_GPIO[23]
F10
UHF_BAND_SEL_GPIO[6]
D26
BT_DATA_GPIO[20]
D11
TX_VCO_0_EN_N_GPIO[8]
D15
TDI
D16
TCK
B19
PA_ON[0]
B4
ANT_SEL2_N_GPIO[11]
B8
UHF_VCO_0_EN_GPIO[3]
B13
Q_OUT
B14
I_OUT
AD26
GSM_PA_PWR_CTL_REF
GSM_PA_EN_GPIO[4]
A20
PA_RANGE[1]_GP_PDM[2]
A8
A13
Q_OUT_N
A14
I_OUT_N
TP204
TP201
51K
R204
2K
R207
R206
1K
51K
R205
VREG_MSMP_2.7V
GSM_TX_VCO_1_EN_N
GSM_TX_VCO_0_EN_N
RX_QM
RX_QP
RX_IM
RX_IP
SPK_AMP_EN
TRK_LO_ADJ
TX_AGC_ADJ
PA_ON
FOLDER_DETECT
VREG_MSMP_2.7V
PA_R0
GSM_PA_EN
TX_IM
TX_QM
ANT_SEL2
TX_IP
TX_QP
TCXO_EN
BT_SBCK
BT_SBDT
GSM_PA_BAND
BT_DATA
RF_ON_TX_ON
BT_CLK
BT_TX_RX_N
BT_SBST
ANT_SEL0
ANT_SEL1
Figure 3.10.1-1 Schematic of RF Interface of MSM6250
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 ...