Yamaha O2R96 Service Manual page 67

SN75121NSR (XU816A00)
JK1: IC104
Dual Line Driver
1A 1 16 Vcc
1B 2 15 2F
1C 3 14 2E
1D 4
13 2D
1E 5 12 2C
1F 6 11 2B
1Y 7 10 2A
GND 8 9 2Y
AM26LS31CNSR (XU996A00)
JK2 (1/2): IC501, 601-604
Quad Line Driver
1
1A 16 Vcc
1Y
2
15 4A
1Z 3
14 4Y
ENABLE G 4
13 4Z
2Z 5
12
ENABLE G
2Y 6
11
3Z
2A
7 10
3Y
GND 8 3A
9
INPUT ENABLES OUTPUTS
A G G Y
H H X H
L H X L
H X L H
L X L L
X L H Z
H= high level
L= low level
X= irrelevant
Z= high impedance (off)
MC26LS30DR2 (XL334A00)
JK1: IC202
Line Driver
SINGLE-ENDED MODE DIFFERENTIAL MODE
EIA-423
16
SR-A
Enable AB
2
15
Input A Out A
Input A
13
SR-B
3
14
Input B Out B
12
Input D
SR-C
6
11
Input C Out C
Enable CD
9
SR-D
Vcc
7
10
Input D Out D
V
EE
SN75124NSR (XV930A00)
JK1: IC002
Triple Line Receiver
1A
1
1B
2
2R
3
2S
4
2A
5
2B
6
2Y
7
GND
8
DS26C32ATMX (XU815A00)
JK1: IC203
JK2 (1/2): IC502-505, 605
Quad Differential Line Receiver
1
INPUT A
INPUT A
2
OUTPUT A 3
ENABLE 4
OUTPUT C 5
INPUT C 6
INPUT C
7
GND 8
Z
L
H
L
H
Z
EIA-422 1
Vcc
Input A
2
3
Input B/
15
3
2
Out A
Enable AB
Out B
14
Mode 4
GND 5
11
7 Out C
Input C/
Out D
6
10
6 Enable CD
Input D
7
1 Gnd 5
8 Mode 4 V 8
EE
Vcc
16
1S
15
1R
14
1Y
13
3A
12
3S
11
3R
10
9 3Y
16 Vcc
-
+
15 INPUT B
14 INPUT B
13 OUTPUT B
12
ENABLE
11
+ OUTPUT D
-
10
INPUT D
INPUT D
9
16 SR-A
Operation
15
Output A Differential
(EIA-422-A)
Output B
14
13 SR-B
12
SR-C
Single-Ended
(EIA-423-A)
11
Output C
10 Output D
SR-D
9
X = Don't Care
Z = High Impedance (Off)
SN75C1168NSR (XU073A00)
JK2 (1/2): IC803
Line Driver/Receiver
1B 1 16 Vcc
2
15
1A 1D
3 14
1R 1Y
4
1DE 13 1Z
5
2R 12 2DE
6 11
2A 2Z
7
2B 10 2Y
8 9
GND 2D
UPC319G2 (IG156700)
JK1: IC304
Voltage Comparator
NC 1 14
NC
2
13
NC
OUTPUT1
3 12
GND1
OUTPUT1
4
+INPUT1 11
+V
+
-
5
-INPUT1 10
-INPUT2
6 9
-V
+INPUT2
OUTPUT2
7
8
GND2
Inputs
Vcc V Mode A B C D
EE
0 0 0 0 0
+5.0 GND
0 1 0 0 1
0 X 1 0 1
0 1 0 0 0
0 0 0 0 1
0 1 0 1 X
+5.0 -5.0 1 0 0 0 0
1 1 0 0 0
1 0 1 0 0
1 0 0 1 0
1 0 0 0 1
X 0 X X X X X X
02R96
Outputs
A B C D
0 1 1 0
1 0 0 1
Z Z 0 1
1 0 1 0
0 1 0 1
1 0 Z Z
0 0 0 0
1 0 0 0
0 1 0 0
0 0 1 0
0 0 0 1
Z Z Z Z
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