Sony DPP-EX50 Service Manual page 12

IC
BU9728AKV-E2 (ROHM)
LCD DRIVER
—TOP VIEW—
37
38
39
40
41
42
43
44
45
46
47
48
PIN PIN
I/O SIGNAL I/O
NO. NO.
1 I OSC1 13 O
2 O OSC2 14 O
3 — V1 15 O
4 — V2 16 I
5 — V3 17 O
6 — GND 18 O
7 — V 19 O
CC
8 I SCK 20 O
9 I SD 21 O
CS
10 I 22 O
D
11 I 23 O
C/
12 O COM0 24 O
9
SD
8
SCK SERIAL ADDRESS
11
D
INTERFACE COUNTER
C/
10
CS
COMMAND/DATA
REGISTOR
COMMAND
DECODER GENERATOR
16
RESET
5-4
INPUTS
D
C/ : DISCRIMINATION SIGNAL
L: DISPLAY DATA
H: COMMAND
24
CS
: CHIP SELECT
23
OSC1 : OSCILLATOR
22
RESET
: RESET
21
SCK : SHIFT CLOCK
20
SD : SERIAL DATA
19
18
OUTPUTS
17
COM0 - COM3 : COMMON FOR LCD DRIVE
16
OSC2 : OSCILLATOR
15
SEG 0 - SEG31 : SEGMENT FOR LCD DRIVE
14
13
PIN PIN
SIGNAL I/O SIGNAL I/O SIGNAL
NO. NO.
COM1 25 O SEG8 37 O SEG20
COM2 26 O SEG9 38 O SEG21
COM3 27 O SEG10 39 O SEG22
RESET
28 O SEG11 40 O SEG23
SEG0 29 O SEG12 41 O SEG24
SEG1 30 O SEG13 42 O SEG25
SEG2 31 O SEG14 43 O SEG26
SEG3 32 O SEG15 44 O SEG27
SEG4 33 O SEG16 45 O SEG28
SEG5 34 O SEG17 46 O SEG29
SEG6 35 O SEG18 47 O SEG30
SEG7 36 O SEG19 48 O SEG31
DISPLAY LCD
DATA RAM SEGMENT
(DD RAM) DRIVER
LCD DRIVER
BIAS CIRCUIT
LCD
TIMING COMMON
COMMON
COUNTER
DRIVER
TPS2041ADR (TI)
POWER-DISTRIBUTION SWITCH
—TOP VIEW—
GND
1
IN 2
IN 3
EN 4
2, 3
IN
CHARGE
PUMP
UVLO
4
EN
XC2173S01XMR (TOREX)
PLL CLOCK GENERATOR
—TOP VIEW—
17 - 48
32 XT
SEG0 - SEG31
V Q0
CC
6 5 4
7
V
CC
3
V1
4
V2
1 2 3
5
V3
INH
XT GND
12 - 15
4 COM0 -COM3
5
V
CC
Cg
Rf
Rup
2
XT
6
XT
1
INH
XC62EP1602MR (TOREX)
POSITIVE VOLTAGE REGULATOR
—TOP VIEW—
CE
EXT
5 4
1 2 3
GND V V
IN OUT
2
V
IN
3
V
OUT
VREF
1
GND
INPUTS
EN : ENABLE
8 OUT
IN : INPUT VOLTAGE
7 OUT
OUTPUTS
OC
: OVER CURRENT
6
OUT
OUT : POWER SWITCH
OC
5
POWER SWITCH
6 - 8
CS
CURRENT
SENSE
CURRENT
DRIVER
LIMIT
5
THERMAL
SENSE S
INPUTS
INH
: STANDBY CONTROL
XT : CRYSTAL OSCILLATOR
OUTPUTS
Q0 : CLOCK
XT
: CRYSTAL OSCILLATOR
Cd
1/2 1/2 1/2
PLL
INPUT
CE
: CHIP ENABLE
OUTPUT
EXT : EXTERNAL TRANSISTOR BASE CURRENT CONTROL
5
CE
4
EXT
_
PROTECTION
+
S
OUT
OC
4
Q0
DPP-EX50 V2