Yamaha Disklavier DU1A, Service Manual

Page: 31 / 151

DU1A
31
PIN
NO.
I/O FUNCTION NAME
PIN
NO.
I/O FUNCTION NAME
1
2
3
4
5
6
7
8
9
10
11
12
13
14
VREFH
VREFL
AINR+
AINR-
AINL+
AINL-
VA
AGND
DIF0
DIF1
LRCK
SCLK
SDTI
SDTO
I
I
I
I
I
I
-
-
I
I
I
I
I
O
Positive Voltage Reference Input, VA
Negative Voltage Reference Input, AGND
Rch Analog Positive Input
Rch analog Negative Input
Lch Analog Positive Input
Lch analog Negative Input
Analog Power Supply
Analog Ground
Audio Data Interface Format
Audio Data Interface Format
Input/Output Channel Clock
Audio Serial Data Clock
Audio Serial Data Input
Audio Serial Data Output 15
16
17
18
19
20
21
22
23
24
25
26
27
28 MCLK
DEM0
DEM1
TST3
TST2
TST1
VD
DGND
/PWDA
/PWAD
CMODE
AOUTL
AOUTR
VCOM
I
I
I
I/O
I/O
I
-
-
I
I
I
O
O
O
Master Clock Input
De-emphasis Frequency Select
De-emphasis Frequency Select
Test Pins (Pull Down Pins)
Digital Power Supply
Digital Ground
DAC power-Down Mode
ADC power-Down Mode
Master Clock Select (“H”:384 fs,“L”:256 fs)
Lch Analog Output
Rch Analog Output
Common Voltage Output, VA/2
AK4520A-VF-E2 (XT802A00) ADC / DAC
DSP: IC002
D6
D5
D4
D3
D2
D1
D0
C3
B3
A3#
VSS
A3
G3#
G3
F3#
F3
E3
D3#
D3
C3#
C3
B2
A2#
A2
G2#
VSS
G2
F2#
F2
E2
D2#
D2
C2#
C1
B1
A1#
A1
G1#
G1
F1#
F1
E1
D1#
D1
C1#
C0
B0
A0#
A0
G0#
G0
F0#
F0
E0
D0#
D0
C0#
VDD
ø/M
/IC
/CS
/AE
/DE
D7
Data bus
Key drive pulse
Ground
Key drive pulse
Ground
Key drive pulse
Key drive pulse
Power supply
Clock
Initial clear
Chip select
Address enable
Touch data enable
Data bus
I
I
I
I
I
I
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
PIN
NAME I/O FUNCTION
NO.
PIN
NAME I/O FUNCTION
NO.
YM3421-F (XL150A00) PWM GENERATOR
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
DRIVE A: IC1
DRIVE B: IC1
PIN
NO.
I/O FUNCTION NAME
PIN
NO.
I/O FUNCTION NAME
1
2
3
4
5
6
7
8
9
10
DATA
CLK
NC
+VDD
D.GND
-VDD
L.E
NC
NC
NC
I
I
I
Data input
Clock
Power supply (+5 V)
Digital ground
Power supply (-5 V)
Latch enable
11
12
13
14
15
16
17
18
19
20 +VCC
BPO
NC
IOUT
A.GND
A.GND
SERV
NC
REF
-VCC
O
Power supply (+5 V)
Bipolar de-couple
Output current
Analog ground
Analog ground
Servo de-couple
Reference de-couple
Power supply (-5 V)
PCM1702U/2K (XP551A00) DAC (Digital to Analog Converter)
MN: IC105,106