Yamaha DME24N Service Manual page 42

DME24N/DME64N
SN75121NSR (XU816A00)
Dual Line Driver
DME24N JK: IC009
DME64N CA: IC802
1A 1
1B 2
1C 3
1D 4
1E 5
1F 6
1Y 7
GND 8
SN75ALS192NSR (X5038A00)
Quadruple Differential Line Driver
DME64N CA: IC702, 703
JK: IC308, 310
1A
1
1Y
2
1Z
3
G
4
2Z
5
2Y
6
2A
7
GND
8
EACH RECEIVER
ENABLES
INPUT
A G G
H H X
L H X
H X L
L X L
X L H
H=high level, L=low level, X=irrelevant,
Z=high impedance (off)
TC74HC4052AF (XS790A00)
Differential 4-Channel
Multiplexer/Demultiplexer
DME24N DM: IC500, 501
DME64N DM: IC500, 501
0Y 1
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
42
SN75124NSR (XV930A00)
Triple Line Receiver
DME24N JK: IC010
DME64N CA: IC803
16 Vcc
15 2F
14 2E
13 2D
12 2C
11 2B
10 2A
9 2Y
GND
SN75ALS193DR (X5036A00)
Quadruple Differential Line Receiver
DME64N CA: IC705, 707
Vcc
16
4A
15
4Y
14
4Z
13
G
12
3Z
11
3Y
10
GND
9 3A
OUTPUTS
DIFFERENTIAL
A–B
Y Z
H L
V ID
L H
H L
–0.2V V ID 0.2V
L H
Z Z
V ID –0.2V
H=high level, L=low level, ?=indeterminate,
X=irrelevant, Z=high impedance (off)
SN74AHC1G08DCKR (X3833A00)
SN74AHCT1G08DCKR (X0158A00)
Single 2-Input Positive-AND Gate
DME24N AD: IC901, 910
16 VDD
15
2X
14 1X
GND
13 X-COM
12
0X
11
3X
10 A
B
9
1A Vcc
1 16
1B 1S
2 15
2R 1R
3 14
2S 1Y
4 13
2A 3A
5 12
2B 3S
6 11
2Y 3R
7 10
8 9 3Y
JK: IC306, 307
1B Vcc
1 16
1A 4B
2 15
1Y 4A
3 14
G 4Y
4 13
2Y G
5 12
2A 3Y
6 11
2B 3A
7 10
8 9 3B
EACH RECEIVER
INPUTS
OUTPUT
ENABLES
Y
G G
H X H
0.2V
X L H
H X ?
X L ?
H X L
X L L
X L H Z
H X H
Open
X L H
JK: IC004, 017
1
A 5 Vcc
2
B
3
4
Y
FUNCTION TABLE
INPUTS OUTPUT
A B Y
H H H
L X L
X L L
SN75C1168NSR (XU073A00)
Line Driver / Receiver
DME24N JK: IC011
DME64N CA: IC804
1B 1 16 Vcc
2
15
1A 1D
3 14
1R 1Y
4
1DE 13 1Z
5
12
2R 2DE
6 11
2A 2Z
7
2B 10 2Y
8
GND 9 2D
SN74LVCC4245APWR (X3096A00)
74LVX4245MTCX (X3097A00)
Dual Supply Octal Bus Transceiver
DME24N DM: IC254, 255
DSP: IC106, 107
DA: IC503
DME64N DM: IC254, 255
DSP: IC106, 107
VCCA
1 24 VCCB
0
2 VCCB
DIR 1 A 23
A1
3 22 /G
2 B
A2 B1
4
3 D 21
A3
5
4 D 20 B2
A4
6 19
5 G2
B3
A5
7
18
6 G1 B4
A6
8 7 15 B5
17
A7 9 16
8 14 B6
10
A8 9 13 15
B7
GND 11 14
10 12 B8
11
GND 12 13
GND
TC7SH04FU (XS775A00)
Inverter Gate
DME24N DM: IC108, 257, 310, 400
DSP: IC100
HP: IC307
DME64N DM: IC108, 257, 310, 400
CA: IC100, 202, 203, 700, 701
DSP: IC100
HP: IC307
JK: IC304, 305
1 5
NC Vcc
IN A 2
GND 3 4 OUT Y