Pioneer DV-45A Service Manual page 120

1
7 PCM1742KE (JACB ASSY : IC403, IC503)
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• D/A Converter
A
¶ Pin Arrangement
1
BCK
2
DATA
3
LRCK
4
DGND
B
5
V
DD
6
V
CC
7
V L
OUT
8
V R
OUT
C
¶ Block Diagram
TE
L 13942296513
BCK 1
LRCK 3 Audio
Serial
Port
DATA 2
D
ML 15
Serial
Control
MC 14
Port
MD 13
E
System Clock
SCK 16
Manager
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120
1
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2
16
SCK
15
ML
14
MC
13
MD
12
ZEROL/NA
11
ZEROR/ZEROA
10
V
COM
9
AGND
4× / 8×
Oversampling
Digital Filter
with
Delta-Sigma
Function
Controller
System Clock
Zero Detect
12 11
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2
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8
¶ Pin Function
No. Nmae
1 BCK
2 DATA
3 LRCK
4 DGND
5 V
DD
6 V
CC
7 V L
OUT
8 V R
OUT
9 AGND
10 V
COM
11 ZEROR/ZEROA
12 ZEROL/NA
13 MD
14 MC
15 ML
16 SCK
Q Q
3 6 7 1 3
DAC
Enhanced
Multi-level
Modulator
DAC
Power Supply
5 9
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DV-45A
3
4
2 9 9 4 2 8
I/O Pin Function
I Audio data bit clock input
I Audio data digital input
L-channel and R-channel Audio data
I
latch enable input
−
Digital ground
−
Digital power supply +3.3V
−
Analog power supply +5V
O Analog output for L-channel
O Analog output for R-channel
−
Analog ground
−
Common voltage decoupling
Zero flag output for R-channel / Zero
O
flag output for L/R-channel
Zero flag output for L-channel / No
O
assign
I Mode control data input
I Mode control clock input
I Mode control latch input
I System clock input
1 5 0 5 8 2 9
7
V
OUT
Output Amp and
Low-pass Filter
10
V
COM
Output Amp and
Low-pass Filter
8
V
OUT
6 8
m
co
4
9 9
9 4 2 8 9 9
L
R