Read Panasonic KX-UDT121RU (serv.man4) Service Manual online
6
KX-UDT121RU
4 Technical Descriptions
4.1.
Block Diagram
RF
BAT +
VB
AT(3.0V)
AT(3.0V)
BAT -
CHG -
CHG +
Power Supp
ly
for Backlight
Key (2
6)
(Tri
an
gl
gl
e Matri
x
)
LCD_Backlight
Key_Backlight
Vib_Motor
M
MIC
RECEI
VER
HEADSET
JA
C
C
K
SPEAKER
X'
TAL
TAL
13
.8
.8
24MHz
5.0v
BBIC
(APU)
ANT
APU-DP
U I
/F
/F
KB
IO1
IO1
8
MIP
MIN
HSSPOUTP
LO
UT
UT
HSMIP
HEADSET_DET
SPOUTP
SPOUTN
Vib_CTRL
CP_ON
LCD_BL1
LCD_BL2
BEL
L_
RE
RE
D /
GR
EE
N
N
CHG_DET
CH
G_
C
C
U
R
Serial Flash Memory
32
MB
MB
it
1.82" TFT Color LCD
1
28x160dot
RF
Circuit
SRAM
4MBit
BBIC
(DPU)
SPI
GPIO
RF I/F
UART CON (3pin)
Ua
rt I/F
JTAG I/F
Li-ion
JTAG
Charge
Cir
cui
t
cui
t
3.
7v / 700mAh
5.0v
BT UNIT
PCM I/F
ANT
CHG_
Sta
te
I/O P
o
rt
IC
I2C
TH
Pow
e
r Supp
ly
for B
T
BT3.0v
BATT
LCD_
BL2
LCD_
BL1
BT_RE
SET
BT_WakeUPOUT
VDDC 1.8v
DOU
T3.0
V
STATUS /
FAULT
BT_ON
VBAT
(3
.0V)
DOUT3.0V
Pow
e
r
Supp
ly
for VBAT
BELL_LED
IC202
IC
1
1
IC
10
0
10
0
IC
10
2
10
2
IC
10
1
10
1
IC601
IC203
IC401
IC201
IC205
X1
address/data bus
Click on the first or last page to see other KX-UDT121RU (serv.man4) service manuals if exist.