Yamaha Portatone PSR-E213 Manual de servicio - Página 16
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PSR-E213/YPT-210
• ML9040A-B01GAZ03A ( XZ987A00 ) LCD DRIVER
• NT3881DF-01 ( X3148A00 ) LCD DRIVER
PIN
NAME
I/O
NO.
1
S22
O
2
S21
O
3
S20
O
4
S19
O
5
S18
O
6
S17
O
7
S16
O
8
S15
O
9
S14
O
10
S13
O
11
S12
O
12
S11
O
13
S10
O
14
S9
O
15
S8
O
16
S7
O
17
S6
O
18
S5
O
19
S4
O
20
S3
O
21
S2
O
22
S1
O
23
Vss
24
OSC1
I
25
OSC2
O
26
V1
27
V2
28
V3
29
V4
30
V5
31
CLK1
O
32
CLK2
O
33
Vdd
34
M
O
35
D
O
36
RS
I
37
R/W
I
38
E
I
39
DB0
I/O
40
DB1
I/O
I
IC BLOCK DIAGRAM （ICブロック図）
• AK4385ET ( X6040A00 )
D/A Converter
DMLCD: IC201
MCLK
1
2
BICK
3
SDTI
LRCK
4
5
PDN
CSN
6
7
CCLK
7
CDTI
8
16
FUNCTION
Segment signal output for LCD
driving
Ground
Oscillator
Oscillator
Power supply
Data latch clock
Data shift clock
Power supply (+5 V)
Altamated signal for LCD driver outout
Display data interface
Read/write
Enable
Data interface
Data interface
16
DZFL
15
DZFR
CSN
µP
14
CCLK
VDD
Interface
CDTI
13
VSS
12
AOUTL+
AOUTL-
LRCK
Audio
11
Data
BICK
10
8
AOUTR+
Interface
SDTI
AOUTR-
9
PDN
PIN
NAME
I/O
NO.
41
DB2
I/O
42
DB3
I/O
43
DB4
I/O
44
DB5
I/O
45
DB6
I/O
46
DB7
I/O
47
C1
O
48
C2
O
49
C3
O
50
C4
O
51
C5
O
52
C6
O
53
C7
O
54
C8
O
55
C9
O
56
C10
O
57
C11
O
58
C12
O
59
C13
O
60
C14
O
61
C15
O
62
C16
O
63
S40
O
64
S39
O
65
S38
O
66
S37
O
67
S36
O
68
S35
O
69
S34
O
70
S33
O
71
S32
O
72
S31
O
73
S30
O
74
S29
O
75
S28
O
76
S27
O
77
S26
O
78
S25
O
79
S24
O
80
S23
O
MCLK
De-emphasis
Clock
Divider
Control
∆Σ
8X
SCF
Interpolator
Modulator
∆Σ
8X
SCF
Interpolator
Modulator
DMLCD: IC301
FUNCTION
Data interface
Common signal output for LCD
driving
Segment signal output for LCD
driving
• NJM4580E (X2331A00)
Dual Operational Amplifier
DMLCD: IC202
A Output
1
+V
VDD
-
A
INPUT
2
VSS
-
+
A+INPUT
3
+
-
DZFL
-
V
4
-V
DZFR
AOUTL+
AOUTL-
AOUTR+
AOUTR-
+
V
8
B Output
7
-
B
INPUT
6
B +INPUT
5