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6. BLOCK DIAGRAM
- 142 -
6.2 GSM & WCDMA RF Block
UMTS-2100 + EGSM-900/DCS-1800/PCS-1900 RF Functional Block Diagram
VC
T
C
X
O
IM
T
BP
F
An
te
nna
VC
O
N
T
R
O
L
& c
tl
s
RT
R6
2
5
0
lo
op
fi
lt
e
r
LO
C
K
lo
op
filt
er
Rx
Tx
SBI & c
tls
Qu
ad
ban
d
VC
O
loop
filt
er
Pw
r de
t
/ c
tls
PA
PC
S
BP
F
dua
l P
A
SW
EG
SM
BP
F
PC
S
BP
F
EG
SM
LP
F
PC
S
LP
F
Ga
in
ct
l &
bi
as ci
rc
ui
ts
PL
L
#
2
F r
e
f
logic
lo
c
k
lock
LO
g
e
ner
a
ti
o
n
& d
ist
ri
but
io
n
VC
O
PL
L
#
1
F re
f
Q
uad
ra
ture
up
c
o
nv
e
rt
e
r
BP
F
LP
F
& D
C
co
rrec
tio
n
PH
DE
T
Qu
adr
at
ur
e
dow
ncon
ver
te
r
Qu
adr
a
tur
e
down
con
ver
te
r
S
B
I
Ct
l
Ckt
s
LP
F
& D
C
co
rrec
tio
n
Q
uad
ra
tu
re
up
con
ver
te
r
LPF
& D
C
cor
rect
io
n
LPF
& D
C
cor
rect
io
n
LP
F
LP
F
DA
C
_
RE
F
PA
D
GS
M
/EG
SM
DC
S
/PC
S
RF
_
O
N
S
B
I
Co
nt
ro
l
ci
rc
ui
ts
SB
C
K
SB
ST
SB
D
T
ct
rl
s
LP
F
LP
F
Qu
ad
ra
ture
do
wnc
onv
er
te
r
LO
g
ene
ra
ti
o
n
&
di
st
ri
but
io
n
LP
F
LP
F
Qu
ad
ra
ture
do
wnc
onv
er
te
r
LO
g
ene
ra
ti
o
n
&
di
st
ri
but
io
n
PL
L
TC
XO
BL
AN
K
PC
S
BP
F
GP
S
BP
F
lo
op
fi
lt
e
r
Rx
Tx
Pwr
det
/ c
tl
s
PA
IM
T
BP
F
GP
S
BP
F
An
te
n
n
a
GS
M
BP
F
DC
S
BP
F
BP
F
Vol
tage
regul
at
or
s
ou
tputs
PM
6
650
Input
pow
er
m
ana
gem
ent
Ge
ner
a
l
ho
use
keep
in
g
Us
er
inte
rfac
e
s
IC
inte
rfac
e
s
inp
uts
outp
uts
inp
uts
ou
tputs
inp
uts
outp
uts
inp
uts
ou
tputs
inp
uts
SB
I
SB
I & c
tl
s
MSM6250
Содержание U880
Страница 1: ...Date November 2005 Issue 1 0 Service Manual Model U880 Service Manual U880 ...
Страница 20: ...3 TECHNICAL BRIEF 21 ...
Страница 32: ...3 TECHNICAL BRIEF 33 Figure 3 5 6 1 GSM PA functional block diagram ...
Страница 35: ...3 TECHNICAL BRIEF 36 Figure 3 5 10 1 Bluetooth system architecture ...
Страница 50: ...3 TECHNICAL BRIEF 51 Figure 3 10 3 2 1 PM6650 Functional Block Diagram ...
Страница 110: ...4 TROUBLE SHOOTING 111 R605 R606 receiver signal serial resistor Receiver CN600 50pin LCD connector FPCB for LCD Module ...
Страница 112: ...4 TROUBLE SHOOTING 113 R605 R606 receiver signal serial resistor CN600 50pin LCD connector CN901 C907 C911 ...
Страница 114: ...4 TROUBLE SHOOTING 115 Loud Speaker U502 U503 Amp ...
Страница 118: ...4 TROUBLE SHOOTING 119 C200 C201 for MIC serial capacitor ...
Страница 121: ...4 TROUBLE SHOOTING 122 Q404 Q403 Q402 VBATT GND ...
Страница 128: ...5 DOWNLOAD 129 5 Choose a Module Image file after clicking on the Browse button ...
Страница 132: ...5 DOWNLOAD 133 Downloading the AMSS Modem image Rebooting and waiting for a while Performing NV restore ...
Страница 134: ...5 DOWNLOAD 135 Download of Module image in progress Download process has completed successfully ...
Страница 143: ...6 BLOCK DIAGRAM 144 6 3 Interface Diagram U880 Interface Diagram ...
Страница 145: ... 146 ...
Страница 154: ... 155 8 PCB LAYOUT ...
Страница 155: ... 156 8 PCB LAYOUT ...
Страница 156: ... 157 8 PCB LAYOUT ...
Страница 157: ... 158 8 PCB LAYOUT ...
Страница 158: ... 159 8 PCB LAYOUT ...
Страница 159: ... 160 8 PCB LAYOUT ...
Страница 166: ...9 CALIBRATION 167 Click START button U880 U880_ver1 1 U880 U880 Click U880 ...
Страница 167: ... 168 ...
Страница 168: ... 169 ...
Страница 170: ... 171 ...
Страница 171: ... 172 ...
Страница 196: ...Note ...
Страница 197: ...Note ...