Yamaha O2R96 Service Manual page 66

02R96
HD74LV245AFPEL (IS024500)
SUB: IC601, 602
TC74HC245AF (XS720A00)
AD1: IC001, 002
ADA: IC001, 002, 004, 005
DA: IC901, 902
FD1: IC101-103
FD2: IC101-103
PN1: IC100
PN2: IC100, 101
SUB: IC701, 904, 905, 908, 909, 911-913
TC74VHC245F (XT487A00)
CPU1: IC115-117, 119-121, 126, 134, 135
DSP: IC005-009, 013-020, 052-054,
067-069, 120, 409, 410, 605-607,
612-615, 802, 805, 851, 901
JK1: IC403, 451-454, 457, 458
JK2 (1/2): IC804, 901, 902, 905, 906, 908,
910-913
TC74VHCT245AF (XV242A00)
CPU1: IC112, 131
DSP: IC002-004, 023-027, 055, 801, 804,
902, 906, 907, 953
Octal 3-State Bus Transceiver
1
D1R
2
A1
3
A2
4
A3
5
A4
A5 6
A6
7
A7
8
A8
9
GND
10
SN74LV4052ANSR (IS405210)
SUB: IC914
TC74HC4052AF (XS790A00)
FD1: IC110, 111
FD2: IC108
Differential 4-channel
Multiplexer/Demultiplexer
1
0Y
2Y
2
2Y 2X
Y-COM 3 Y-COM 1X
3Y 4
3Y X-COM
1Y 5
1Y 0X
INH 6
INH 3X
VEE
7 A
VSS 8
66
74VHC541SJX (XY961A00)
DSP: IC070, 071, 106, 803, 806, 852, 903,
908, 909, 951, 952
HD74LV541AFPEL (IS054100)
DSP: IC001
Octal 3-State Buffer
G1
GND
SN74LV4040ANSR (IS404010)
DSP: IC701
12-Stage Binary Ripple Counter
20 Vcc
19
G
18
B1
17
B2
Q12
16
B3
Q6
15
B4
Q5
14
B5
Q7
13
B6
Q4
12
B7
Q3
11
B8
Q2
Vss
HD74LV4053AFPEL (IS405300)
DSP: IC060, 062
Triple 2-Channel
Multiplexer/Demultiplexer
Switches IN/OUT
Y1
- do. - Y0
- do. - Z1
Commons OUT/IN
16 VDD
Swiches IN/OUT
15 2X Z0
Control Inhibit
14 1X
-DC Voltage Supply
13 X-COM
- do -
12
0X
11
3X
10 A
B
9
1
20 Vcc
A1
2 G2
19
A2
3 Y1
18
A3
4 17 Y2
A4
5 16 Y3
A5 Y4
6 15
A6 Y5
7
14
A7
Y6
8 13
A8
Y7
9 12
Y8
10 11
1
16 VDD
Q12
2
15
Q11
Q6 Q11
3
14
Q10
Q5 Q10
4 13
Q8
Q7 Q8
5 12
Q9
Q4 Q9
6
11
CLR
Q3 CL
7
10 Input Pulses (
Q2 CK
8 9
Q1
Q1
+DC Voltage Supply
1 Y1 V 16
DD
Commons OUT/IN Y
2 Y0 Y 15
- do. -
3 Z1 X 14
Swiches IN/OUT
4 Z X1 13
Z
- do -
5 Z0 X0 12
Control Input A
6 INH A 11
- do. - B
7 VEE B 10
- do. - C
8 V C 9
SS
HD74LV595AFPEL (IS059500)
PN1: IC102, 103
PN2: IC104-107, 501, 502
8-Bit Shift Register with Output
Latches
1
OB
OB
2
OC OA
OC
3
OD SER
OD
4 OE G
OE
5 OF RCK
OF
6
OG SCK
OG
7
OH OH SCLR
OH'
GND 8
HD74LV4051AFPEL (IS405100)
FD1: IC139, 140
FD2: IC128, 129
Single 8-channel
Multiplexer/Demultiplexer
Channel IN/OUT 4
1 CH4 V
DD
- do. - 6
2 CH6 CH2
Commons OUT/IN
3 COM CH1
Channel IN/OUT 7
4 CH7 CH0
- do. - 5
5 CH5 CH3
Control Inhibit
6 INH
)
-DC Voltage Supply
7 VEE
- do -
8 V
SS
TC74LVX4245FS (XU229A00)
CPU1: IC127
DSP: IC010, 011, 021, 022, 028-031
Dual Supply Octal Bus Transceiver
VCCA
1
0
DIR 2 1
A
A1 3
2 B
X
A2 4
3 D
X1
A3
5
4 D
X0
A4 6
5 G2
A5
7
6 G1
A6 8 7 15
A7 9
8 14
10 9 13
A8
11
GND 10 12
11
12
GND
16 Vcc
15
OA
14
SER
13
G
12
RCK
11
SCK
10 SCLR
9 OH'
+DC Voltage Supply
16
Channel IN/OUT 2
15
- do. - 1
14
- do - 0
13
- do - 3
12
Control Input A
A 11
- do. - B
B 10
- do. - C
C 9
VCCB
24
VCCB
23
/G
22
B1
21
20 B2
19
B3
18
B4
B5
17
16
B6
15
B7
14
B8
13
GND