Yamaha NX-SW60, Service Manual

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DVR-S60/NX-SW60
56
DVR-S60
NX-SW60
IC813 74VHC157MTC,TC74VHC157FT
(Quad 2-Channel Multiplexer)
1
2
3
4
5
6
7
8
SELECT
1A
1B
1Y
2A
2B
2Y
GND
16
15
14
13
12
11
10
9
V
CC
ST
4A
4B
4Y
3A
3B
3Y
ST
H
L
L
L
L
A
X
L
X
X
H
OUTPUTS
L
L
H
L
H
INPUTS
SELECT
X
L
L
H
H
X : Don’t Care
D
X
X
X
L
H
B
A
Y
Y
B
Y
A
Y B
A
G
S
B
A
IC815 24LC16BT, S524L50X51 (16K EEPROM)
Name Function
V
SS
SDA
SCL
WP
V
CC
A0,A1,A2
Ground
Serial Address/Data I/O
Serial Clock
Write Protect Input
+2.5V to 5.5V Power Supply
No Internal Connection
4
3
2
1
5
6
7
8
SDA
SCL
WP
V
CC
V
SS
A2
A1
A0
24LC16B
IC816 74VHCT244,TC74VHCT244
(AFT Non-Inverted, 3-state Output)
1
2
3
4
5
6
7
8
9
10
17
18
19
20
11
12
13
14
15
16
V
CC
2Y2
2Y3
1A3
1Y1
2A4
1Y3
1A1
1Y2
2A3
2A1
2A2
1Y4
2Y4
1A2
GND
1A4
2Y1
1G
2G
IC818 74VHC374,TCVHC374 (Octal D-type Flip Flop)
Truth Table Pin Descriptions
Inputs Pin Names Description Outputs
Logic Diagram
IC819 NC7SZ08P5,TC7SH08FU (2 Input AND Gate)
4
2
1 5
V
CC
GND
IN A
IN B
OUT Y
3
IC842,862~864KIA4558F, NJM4558M
(Operational Amplifier)
1
2
3
5
6
7
8
4
VCC(+)
A OUTPUT
A
B
B OUTPUT
B -INPUT
B +INPUT
A -INPUT
A +INPUT
VEE(-)
V
OUT
L 7
V
COM
10
V
OUT
R 8
BCK 1
LRCK 3
DATA 2
ML 15
MC 14
MD 13
SCK 16
ZER
OL
12
ZER
O
R
11
V
DD
5
DGND
4
V
CC
6
A
GND
9
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TYPE
IN
IN
IN
-
-
-
OUT
OUT
-
-
OUT
OUT
IN
IN
IN
IN
NAME
BCK
DATA
LRCK
DGND
V
DD
V
CC
V
OUT
L
V
OUT
R
AGND
V
COM
ZEROR/
ZEROA
ZEROL/NA
MD
MC
ML
SCK
PIN ASSIGNMENTS PIN CONFIGURATION
BLOCK DIAGRAM
Output Amp and
Low-Pass Filter
8x
Oversampling
Digital Filter
with
Function
Controller
Serial
Input
I/F
Function
Control
I/F
System Clock
Manager
System Clock
Zero Detect Power Supply
Enhanced
Multi level
Delta-Sigma
Modulator
DAC
Output Amp and
Low-Pass Filter
DAC
1
2
3
4
5
6
7
8
BCK
DATA
LRCK
DGND
V
DD
V
CC
V
OUT
L
V
OUT
R
16
15
14
13
12
11
10
9
SCK
ML
MC
MD
ZEROL/NA
ZEROR/ZEROA
C
COM
AGND
FUNCTION
Audio Data Bit Clock Input.
Audio Data Bigital Input.
L-Channel and R-Channel Audio Data Latch
Enable Input.
Digital Ground.
Digital Power Supply, +3.3V.
Analog Power Supply, +5V.
Analog Output for L-Channel.
Analpg Output for R-Channel.
Analog Ground.
Common Voltage Decoupling.
Zero Flag Output for R-Channel/Zero Flag
Output for L/R-Channel.
Zero Flag Output for L-Channel/No Assign.
Mode Control Data Input.
Mode Control Clock Input.
Mode Control Latch Input.
System Clock Input.
(1)
(1)
(1)
(2)
(2)
(2)
NOTES: (1)Schmitt-trigger input, 5V tolerant. (2)Schmitt-trigger with internal
pull-down, 5V tolerant.
PCM1748
IC817 PCM1748E (D/A Converter)
IGNORE
MPEG P.C.B.
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