Block Diagram - Handset Section - Sony SPP-N1025 Service Manual

SPP-N1025/N1026
5-2. BLOCK DIAGRAM – HANDSET Section –
A2
RF UNIT
RF TX DATA
PLL EN
PLL CLK
PLL I2C DATA
RX DATA
CAR DET/LOW BAT
EARO
SDA
EEPROM
SCL
U4
SP1
MIC
J8
I
MIC1
K1 – 22,
SW1, 2
KEY MATRIX
K1 K2 K3 K16 SW1
1 2 ABC 3 DEF TALK
VOL V
CID
K4 K5 K6 K17 K21
4 GHI 5 JKL 6 MNO FLASH SELECT
K7 K8 K9 K19
7 PQRS 8 TUV 9 WXYZ HOLD
K11 K10 K12 K22 SW2
TONE 0 OPER # INTERCOM
VOL v
DIR
K13 K14 K15 K20 K18
ONE TOUCH PGM CHANNEL OFF
PAUSE
REDIAL
29 TX DATA
14 PLL EN
15 PLL CLK
16 PLL I2C DATA
5
6 17 I2C CLK
11 RX DATA
12 CAR DET
BUZZER 27
SYSTEM
CONTROLLER
U2
BACK LIGHT 30
CRADLE 9
RESET 8
V4 95
V3 96
D10 – 12
13 KEY INT
V2 97
V1 98
2 3 6 7
X2 X1
8MHz 32.768kHz
14 14
• SIGNAL PATH
LCD1
LIQUID CRYSTAL
DISPLAY MODULE
BUZZER
DRIVE BUZ1
Q4
D5, 6
(LCD BACK LIGHT)
D14 – 17 B+
(KEY BACK LIGHT)
(N1026)
LED DRIVE
Q2
CRADLE
DETECT
Q1
D2
RESET SIGNAL
GENERATOR
Q3, 5
D7
+2.3V
REGULATOR
U3
: TX
: RX
+
CHARGE
TERMINAL
–
RECHARGEABLE
BATTERY PACK
(BP-T18)
3.6V 600mAh