Pioneer VSX-321-K-P Service Manual page 31

5
PCM1681 (D-MAIN ASSY: IC601)
24-Bit, 192-kHz Sampling, Enhanced Multilevel Delta-Sigma, Eight-Channel Audio Digital-to-Analog Converter
• Pin Arrangement (Top View)
• Block Diagram
BCK
LRCK
DATA1 (1, 2)
DATA2 (3, 4)
DATA3 (5, 6)
DATA4 (7, 8)
MS/ADR/FMT1
MC/SCL/DEMP
MD/SDA/MUTE
Function
Control
MSEL
System Clock
SCK
Manager
5
6
ZR1/ZR1/FMT0 1
2
MS/ADR/FMT1
3
MC/SCL/DEMP
MD/SDA/MUTE 4
SCK 5
DATA1 6
BCK 7
LRCK 8
V 9
DD
DGND
10
DATA2
11
DATA3
12
DATA4 13
MSEL
14
Serial
Input
I/F
8
Oversampling
Digital Filter
With
Function
Controller
I/F
System Clock
Zero Detect
6
7
28 ZR2
27
V 1
OUT
26
V 2
OUT
25 V
COM
24 AGND2
23 V 2
CC
22 V 3
OUT
21 V 4
OUT
20 V 5
OUT
V 6
19
OUT
AGND1
18
V 1
17
CC
16 V 7
OUT
V 8
15
OUT
DAC
DAC
DAC
DAC
Enhanced
Multilevel
Delta-Sigma
Modulator
DAC
DAC
DAC
DAC
Power Supply
HTP-071
7
8
V
Output Amp and
OUT
Low-Pass Filter
Output Amp and
V
OUT
Low-Pass Filter
V
Output Amp and
OUT
Low-Pass Filter
V
Output Amp and
COM
Low-Pass Filter
V
OUT
Output Amp and
Low-Pass Filter
V
OUT
Output Amp and
Low-Pass Filter
V
OUT
Output Amp and
Low-Pass Filter
V
OUT
Output Amp and
Low-Pass Filter
V
OUT
8
A
B
C
1
2
3
D
4
5
6
7
E
8
F
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