Sony STR-K785 Service Manual page 32

STR-K785
Q Q
3 7 6 3 1 5 1 5 0
• IC Block Diagrams
– DIGITAL Board –
IC1131 BR24L16FJ-WE2
VCC 8
11 bit
WP 7
ADDRESS
11 bit
DECODER
SCL 6
CONTROL CIRCUIT
HIGHT VOLTAGE
SDA 5
GENERATOR
T E
L 1 3 9 4 2 2 9 6 5 1 3
IC1301 LC89056W-E
36 35
CE 37
CLK 38
MICROCOMPUTER
INTERFACE
XSEL 39
MODE0 40
MODE
MODE1 41 SELECT
DGND 42
DVDD 43
DOSEL0 44
DOSEL1 45
CKSEL0 46
CKSEL1 47
SYSTEM
XMODE 48
RESET
1 2 3
w w w
STR-K785
1 A0
16 K bit EEPROM ARRAY
8 bit
2 A1
SLAVE WORD DATA
ADDRESS REGISTER REGISTER
START STOP
3 A2
ACK
POWER SUPPLY
4 GND
VOLTAGE DETECTION
34 33 32 31 30 29 28 27 26 25
24 AUDIO
C BIT PA/PB
DETECT DETECT
23 EMPHA
SAMPLING
FREQUENCY
22 XIN
LOCK CLOCK 21 XOUT
DETECT
20 XMCK
19 DVDD
18 DGND
17 XSTATE
16 DATAO
15 LRCK
DATA
TIMING 14 BCK
DEMODULATOR
13 CKOUT
PLL
INPUT
CIRCUIT
4 5 6 7 8 9 10 11 12
x a o
. i
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IC1452 PCM1602APT
RST 37
SCKI 38
SCKO 39
MANAGER
BCK 40
LRCK 41
TEST 42
VDD 43
INTERFACE
DGND 44
DATA1 45
DATA2 46
DATA3 47
ZEROA 48
1
Q Q
3 7 6
IC1401 PCM1800E/2K
24 23 22 21 20 19
SINGLE-END
DEFERENTIAL REFERENCE
CONVERTER
3 4
1 2
u 1 6 3
y
32 32
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2 4
8 9 9
32 31 30
36 35 34 33 29 28 27 26
FUNCTION
CONTROL
INTERFACE
SYSTEM
CLOCK
DAC LPF
DAC LPF
DAC LPF
4X/8X ENHANCED
OVER SAMPLING MULTI-
DAC LPF
SERIAL
DIGITAL LEVEL
INPUT
FILTER DELTA-
WITH SIGMA
FUNCTION MOJULE
CONTROLLER
DAC LPF
DAC LPF
DAC LPF
ZERO DETECT DAC LPF
2 3 4 5 6 7 8 9
3 1 5 1 5 0 8 9
18 17 16 15 14 13
DIGITAL ∑
MODULATOR 1/64
SERIAL I/O
DECIMATION
INTERFACE
FILTER
&
&
MODE/FORMAT
LOW-CUT
CONTROL
DIGITAL ∑
FILTER
MODULATOR
SINGLE-END CLOCK/
DEFERENTIAL TIMING CONTROL RESET/
CONVERTER POWER CONTROL
10 11
5 6 7 8 9
m
c o
.
2
8 9 9
25
24 VCC3
AGND3
23
22 VCC4
21 AGND4
20 VOUT8
19 AGND6
18 VCC5
17 AGND5
16 VOUT7
15 VCOM
14 VOUT1
13 VOUT2
10 11 12
2 4 9 8 2 9 9
IC1503 TC7WH157FU (TE12R)
1 8
1A Vcc
2 7
1B 1Y
2Y 2B
3 6
GND 2A
4 5
12