Samsung SGH-E250D, Service Manual

Page: 22 / 61

7. Block Diagrams
7-1
7-1. BaseBand Solution Block Diagram
M o d em
(P N X 52 30-1)
P H O N E
P O W E R
(P C F 506 11 H N /
N 1)
R F B lo ck
SP K
R F
S /W
SI
M
_
V
C
C
S IM _V C C
V D D _IO _LO W
+ V D D _IO _H IG H
+ V D D _G SM _C O R E
VD
D_
IO
_
L
O
W
V B A T 3 .7V
VB
A
T
A V D D
A V D D _ H FA
+V
C
C
_
S
YN
V
DD_
RX
_
T
X
V D D _S D
V D D _S D
V D D _S LE E P
M IC _B IA S
E a rp h o n e
EA R M IC
M IC
M IC _P
M IC _N
E A R M IC _P
E A R M IC _N
R X _T X _IP / R X _T X _IN
R X _T X _Q P / R X _TX _Q N
R F_D A T A / R F _E N
R F _C LK
S IM IO
S IM R S T
S IM C LK
U S B D M / U SB D P
U S B C N
U S B D M / U S B D P
LDO
(R1114D 331D )
V D D _ U S B
V B U S
S IM
So cket
U SB F ilter
(PA CU S BU 3)
B lueto o th
(B G B204 -1)
L D O
(B H 33P B 1W H F V )
V B AT
V D D _B T
D C L / F S C
D U / D D
BT _IN T
A u d io
A P M
(L M 49 46 S Q )
V BA T
H F R _P
H F R _N
E A R 1
E A R 2
S P K _P
S P K _N
E A R S P K _R
E A R S P K _C O M
E A R S P K _L
M O T O R
H a ll IC
(H E D 52A 1U 11 )
+ VD D _IO _H IG H
S LID E
CA M _D (0 :7) / VS YN C / H S YN C / P CLK
C AM _EN
C
L D O
(X C 6401F F20 )
VB AT
V _C AM 18
V _C AM 28
M C LK / S _R S T
S U B
V BA T
M L D O
(R1114D 331D )
VIB_E N
V DD _VIB
+ V D D _IO _LO W
+ VD D _IO _H IG H
LC D
(2.0'
’
Q Q V G A )
LD _D (0:15 ) / L_R S / LC D _C S / LC D _W R
LC D_R ST
C LKB UR S T
P H O N E M E M O R Y
(K A P29V G 00M -D 444)
on eN A N D
2 56 M b
U tR A M
1 28 M b
+ VD D _IO _ LO W
N O R
25 6 M b
H A(2:17),H A (24) / H D(0:15)
H A(2:15) / H D (0 :15)
H A(2:17) / H D (0:15)
H A (0:1),H A (18:23)
H A (0:1)
H A (0:1) ,H A (18:22)
CS 0n_F LA SH / O En / W En
C S 4n_NA N D / O E n / W En
C S 1n _R A M / O E n / W En
R S T EX T n
SD _CLK
T -
F L A S H
INV ER T E R
(T C7S H 04F U)
SD _D AT A / S D _C M D
SD _D ET E C T
VDD_KEY
C
K E Y P A D
C
M A IN
L D O
(X C 6401F F 38)
VB AT
K EY _R O W ((0:4)
K EY _C O L((0:4)
LE D _O N