Digital Board - Sony STR-K990 Service Manual

STR-K990
– DIGITAL Board –
IC1401 PCM1803DBR
5 th Order
Delta-Sigma
Modulator
Single-End
/Differential
Converter
IC1452 PCM1602APT
RST 37
SCKI 38
SCKO 39
BCK 40
LRCK 41
TEST 42
VDD 43
DGND 44
DATA1 45
DATA2 46
DATA3 47
ZEROA 48
40
20 19 18 17
Mode/
Serial
Format
Interface
Control
× 1/64 (× 1/128)
Decimation
Filter
with
DC Cut Filter
5 th Order
Delta-Sigma
Modulator
Single-End
Reference
/Differential
Converter
1 2 3 4
32 31 30
36 35 34 33
FUNCTION
CONTROL
INTERFACE
SYSTEM
SYSTEM
CLOCK
CLOCK
MANAGER
4X/8X
OVER SAMPLING
SERIAL
DIGITAL
INPUT
FILTER
INTERFACE
WITH
FUNCTION
CONTROLLER
ZERO DETECT
1 2 3 4 5 6
Clock and Timing Control
Power Supply
5 6
29 28 27 26
OUTPUT AMP
DAC
AND LPF
OUTPUT AMP
DAC
AND LPF
OUTPUT AMP
DAC
AND LPF
ENHANCED
MULTI- OUTPUT AMP
DAC
AND LPF
LEVEL
DELTA-
SIGMA
MOJULATOR
OUTPUT AMP
DAC
AND LPF
OUTPUT AMP
DAC
AND LPF
OUTPUT AMP
DAC
AND LPF
OUTPUT AMP
DAC
AND LPF
7 8
16 15 14 13 12 11
7 8 9 10
25
24 VCC3
23 AGND3
22 VCC4
21 AGND4
20 VOUT8
19 AGND6
18 VCC5
17 AGND5
16 VOUT7
15 VCOM
14 VOUT1
13 VOUT2
9 10 11 12