Sony STR-K685 Service Manual page 33

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• IC Block Diagrams
– DIGITAL Board –
TE
L 13942296513
IC1401 PCM1803DBR
VINL 1
VINR 2
VERF1 3
VERF2 4
VCC 5
AGND 6
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PDWN 7
BYPAS 8
.
FSYNC 9
LRCK 10
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IC1301 LC89056W-E
36
CE 37
CLK 38
MICROCOMPUTER
INTERFACE
XSEL 39
MODE0 40
MODE
SELECT
MODE1 41
DGND 42
DVDD 43
DOSEL0 44
DOSEL1 45
CKSEL0 46
CKSEL1 47
SYSTEM
XMODE 48
RESET
1
5 th Order
Single-End
Delta-Sigma
/Differential
Modulator
Converter
Reference
Single-End
5 th Order
/Differential
Delta-Sigma
Converter
Modulator
Power Supply
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y
i
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2 9
8
35 34 33 32 31 30 29 28 27 26
C BIT
DETECT
SAMPLING
FREQUENCY
LOCK
CLOCK
DETECT
DATA
TIMING
DEMODULATOR
INPUT
CIRCUIT
2 3 4 5 6 7
Q Q
3 6 7 1 3 1 5
× 1/64 (× 1/128)
Decimation
Filter
with
DC Cut Filter
Clock and Timing Control
co
.
9 4 2 8
25
24 AUDIO
PA/PB
DETECT
23 EMPHA
22 XIN
21 XOUT
20 XMCK
19 DVDD
18 DGND
17 XSTATE
16 DATAO
15 LRCK
14 BCK
13 CKOUT
PLL
8 9 10 11 12
0 5 8 2 9 9 4
Serial
Interface
Mode/
Format
Control
m
STR-K685
9 9
2 8 9 9
20 MODE1
19 MODE0
18 FMT1
17 FMT0
16 OSR
15 SCKI
14 VDD
13 DGCD
12 DOUT
11 BCK
33