Ic Block Diagram - Yamaha MD4S Service Manual

MD4S
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3 7 63 1515 0
AK4520A-VF-E2 (XT802A00) DAC & ADC MAIN IC301
PIN
NAME I/O
NO.
1 VREFH I Positive Voltage Reference Input, VA
2 VREFL I Negative Voltage Reference Input, AGND
3 AINR+ I Rch Analog Positive Input
4 AINR- I Rch analog Negative Input
5 AINL+ I Lch Analog Positive Input
6 AINL- I Lch analog Negative Input
7 VA - Analog Power Supply
8 AGND - Analog Ground
9 DIF0 I Audio Data Interface Format
10 DIF1 I Audio Data Interface Format
11 LRCK I Input/Output Channel Clock
12 SCLK I Audio Serial Data Clock
13 SDTI I Audio Serial Data Input
14 SDTO O Audio Serial Data Output

IC BLOCK DIAGRAM

TC74HCU04AF-TP1 (XD660A00)
Hex Inverter
MAIN IC106
1 14
1A
TE
L 13942296513
2
13
1Y
3
12
2A
4
11
2Y
5
10
3A
6
9
3Y
7 8
Vss
SN74HC374ANSR (XQ042A00)
Octal 3-State D-Type Flip-Flop
MAIN IC105
OUTPUT
1 20
CONTROL
1Q 2 19
Q Q
OE OE
D CK CK D
1D 3 18
2D 4 17
D CK CK D
OE OE
Q Q
2Q 5 16
3Q 6 Q Q 15
www
OE OE
D CK CK D
3D 7 14
4D 8 13
D CK CK D
OE OE
Q Q
4Q 9 12
.
GND 10 11
15
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FUNCTION
TC74HC14AF-TP1 (XD657A00)
Hex Inverter
1
1A
VDD
2
6A 1Y
3
2A
6Y
4
2Y
5A
5
3A
5Y
6
4A 3Y
7
4Y GND
TC4053BF (XB738A00)
TC74HC4053AF (XR150A00)
Multiplexer/Demultiplexer
MAIN IC307 – 309
Switches IN/OUT
Vcc
Y1 1
8Q
do. Y0 2
8D
do. Z1 3
Commons OUT/IN
7D
4
Z
7Q
Swiches IN/OUT
5
Z0
6Q Control Inhibit 6
6D
-DC Voltage Supply 7
x ao
y
5D
do 8
5Q
i
CLOCK
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8
PIN
NAME I/O
NO.
15 MCLK I
16 DEM0 I
17 DEM1 I
18 TST3 I/O
19 TST2 I/O
20 TST1 I
21 VD -
22 DGND -
23 /PWDA I
24 /PWAD I
25 CMODE I
26 AOUTL O
27 AOUTR O
28 VCOM O
MAIN IC111
Q Q
14
VDD
3 6 7 1 3
13
6A
12
6Y
11
5A
10
5Y
9
4A
8
4Y
IC108
Y1 V 16 +DC Voltage Supply
DD
Y0 Y 15 Commons OUT/IN Y
Z1 X 14 do. X
Z X1 13 Swiches IN/OUT X0
Z0 X0 do X0
12
INH A 11 Control Input A
VEE B 10 do. B
u163
V C 9 do. C
SS
.
2 9 9 4 2 8
FUNCTION
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
SN74HC174NSR (XD836A00)
Hex D-Type Flip-Flop
MAIN IC113
CLEAR 1 16 Vcc
1 5 0 5 8 2 9 9 4
1Q 2 15 6Q
Q Q
G G
D C K C K D
1D 3 14 6D
2D 4 D C K C K D 13 5D
G G
Q Q
2Q 5 12 5Q
D C K
3D 6 C K D 11 4D
G G
Q Q
3Q 7 10 4Q
GND 8 9
CK
NJM4558MT-1 (IG103520)
NJM2068MD-T1 (XJ553A00)
NJM4556AMT1 (XQ138A00)
µPC4570G2 (XF291A00)
Dual Operational Amplifier
MIX IC103 – 112
IC115, 120, 101, 102, 113, 114,
116 – 118, 119
MAIN IC303 – 306, 310, 311
+DC Voltage
Output A 1 +V 8
Supply
Inverting
m
2 7 Output B
Input A
- +
Inverting
Non-Inverting
3 6
+ -
Input B
Input A
co
Non-Inverting
-DC Voltage Supply 4 -V 5
Input B
9 9
2 8 9 9