Yamaha Portable Grand DGX-220 Service Manual page 17

• NT3881DFG-01 (X3148A00) LCD DRIVER
NAME I/O
PIN 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
I
36 RS
I
37 R/W
38 E I
39 DB0 I/O
40 DB1 I/O
●
AK4385ET (X6040A00) DAC (Digital to Analog Converter)
PIN
NAME I/O FUNCTION
NO.
1 MCLK I Master Clock
2 BICK I Audio Serial Data Clock
3 SDTI I Audio Serial Date Input
4 LRCK I L/R Clock
5 PDN I Power Down mode
6 CSN I Chip Select
7 CCLK I Control Data Input
8 CDTI I Control Data Input
FUNCTION
Segment signal output for LCD
driving
Ground
Oscillator
Oscillator
Power supply
Data latch clock
Data shift clock
Power supply (+5 V)
Alternated signal for LCD driver output
Display data interface
Read/write
Enable
Data interface
Data interface
PIN
NO.
9
10
11
12
13
14
15
16
NAME I/O
PIN 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
NAME I/O FUNCTION
AOUTR- O Rch Analog out(-)
AOUTR+ O Rch Analog out(+)
AOUTL- O Lch Analog out(-)
AOUTL+ O Lch Analog out(+)
Vss - Ground
VDD - Power Supply
DZFR O Rch Data Zero Input Detect
DZFL O Lch Data Zero Input Detect
DGX-220/YPG-225
DMLCD:IC601
FUNCTION
Data interface
Common signal output for LCD
driving
Segment signal output for LCD
driving
DMLCD:IC501
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