Ic Block Diagram （Icブロック図 - Yamaha YDP-131 Service Manual

µPD789022GB-A15-8E (XZ560100) CPU KBS
PIN
NAME I/O
NO.
1 P12 I/O
2 P11 I/O Port 1
3 P10 I/O
4 P47/KR7 I/O
5 P46/KR6 I/O
6 P45/KR5 I/O
7 P44/KR4 I/O
Port 4/Key return signal detection input
8 P43/KR3 I/O
9 P42/KR2 I/O
10 P41/KR1 I/O
11 P40/KR0 I/O
12 NC
13 IC Internally connected (N.C.)
14 X2
Clock
15 X1 I
16 VSS0 Ground
17 VDD0 Power supply
18 /RESET I System reset
19 P53 I/O
Port 5
20 P52 I/O
21 P51/TO2 I/O Port 5/16-bit timer output
22 P50/TI0/TO0 I/O Port 5/External count clock input to 8-bit timer/8-bit timer output
IC BLOCK DIAGRAM （IC ブロック図）
SN74LV32APWR (X5647A00)
Quad 2 Input OR
DM: IC106
1A Vcc
1 14
1B 4B
2 13
1Y 4A
3 12
2A 4Y
4 11
2B 3B
5 10
2Y 3A
6 9
GND 3Y
7 8
NJM4580L (XF195A00)
Dual Operational Amplifier
AM: IC101–104
A B
- -
1 2 3 4 5 6 7 8
OUT -IN +IN -V +IN -IN OUT +V
A A A B B B
FUNCTION
SN74AHCT1G08DCKR (X0158A00)
Single 2-Input Positive-AND Gate
DM: IC302, 303
A 1
2
B
3
GND
FUNCTION TABLE
INPUTS
A B
H H
L X
X L
PIN
NAME I/O
NO.
23 P32/INTP2/CPT2 I/O Port 3/External interrupt input/Capture edge input
24 P31/INTP1 I/O
Port 3/External interrupt input
25 P30/INTP0 I/O
26 P22/RXD/SI0 I/O Port 2/Asynchronous serial interface serial data input/Serial interface serial data input
27 P21/TXD/SO0 I/O Port 2/Asynchronous serial interface serial data output/Serial interface serial data output
28 P20/ASCK//SCK0 I/O Port 2/Asynchronous serial interface serial clock input/Serial interface serial clock
29 P07 I/O
30 P06 I/O
31 P05 I/O
32 P04 I/O
Port 0
33 P03 I/O
34 P02 I/O
35 P01 I/O
36 P00 I/O
37 NC
38 VDD1 Power supply
39 VSS1 Ground
40 P17 I/O
41 P16 I/O
42 P15 I/O Port 1
43 P14 I/O
44 P13 I/O
NJM4580E (TE2) (X2331A00)
Dual Operational Amplifier
DM: IC402
5 Vcc
Non-Inverting
4
Y
-DC Voltage Supply
OUTPUT
Y
H
L
LA4536M (X6813A00)
L
Headphone-stereo Power Amplifier
AM: IC301
P/SW
IN 1
PRE GND
IN 2
REF
YDP-131/YDP-131C
DM: IC301
FUNCTION
+DC Voltage
Output A
1 +V 8
Supply
Inverting
Output B
2 7
Input A
- +
Inverting
3 6
+ -
Input A Input B
Non-Inverting
4 -V 5
Input B
POWER MUTE
1 10
MT/SW
SWITCH CIRCUIT
2 9
Amp1 OUT 1
3 8 POWER GND
4 7
OUT 2
Amp2
5 6
BIAS V
CC
23