Sony HCD-HDX285 Service Manual page 62

HCD-HDX285/HDX287WC/HDX585/HDX587WC/HDX589W/HDX685/HDX686W
• IC Block Diagrams
– MAIN Board –
IC303 PCM1808PWR
LOW-PASS FILTER
LOW-PASS FILTER
DELTA-SIGMA
MODULATOR
×1/64
DECIMATION
FILTER
VREF 1 REFERENCE
WITH
HIGH-PASS
DELTA-SIGMA
FILTER
MODULATOR
AGND 2
VCC 3
POWER
VDD 4 SUPPLY
DGND 5
CLOCK & TIMING CONTROL
SCKI 6
LRCK 7
IC304 LC89056W-E
36 35 34 33 32 31 30 29 28 27 26
CE 37 C BIT
DETECT
CL 38
SAMPLING
XSEL 39
FREQUENCY
MICROCOMPUTER
MODE0 40
INTERFACE
MODE1 41
LOCK
X' TAL
DGND 42
DETECT
DVDD 43
DOSEL0 44
DATA
TIMING
DOSEL1 45 DEMODULATOR
CKSEL0 46
CKSEL1 47
XMODE 48
INPUT
CIRCUIT
1 2 3 4 5 6 7
HCD-HDX285/HDX287WC/HDX585/HDX587WC/HDX589W/HDX685/HDX686W
ANTIALIAS
14 VINR
ANTIALIAS
13 VINL
12 FMT
SERIAL
11 MD1
INTERFACE
& 10 MD0
MODE/FORMAT 9 DOUT
CONTROL
8 BCK
IC307 TC7WH157FK (TE85R)
25
EN G
A 1 A Y
PA/PB 24 AUDIO
B 2 B Y
DETECT 23 EMPHA
Y 3
GND 4
22 XIN
21 XOUT
20 XMCK
19 DVDD
18 DGND
17 XSTATE
16 DATAO
15 LRCK
14 BCK
13 CKOUT
IC452, 507, 510 SI-3010KM-TLS
VC 1
PLL
VIN 2
GND 3
8 9 10 11 12
REF
VOUT 4
ADJ 5
IC504 TK11250CMCL-G
6
CONTROL
CIRCUIT
CONSTANT
CURRENT
SOURCE
BANDGAP
REFERENCE
1
IC506 S-80935CNMC-G85T2G
OUT 1
VDD 2
–
+
8 VCC
11 7 ST
11 6 SELECT
VREF
5 Y
VSS 3
IC1105, 1107, 1708 TK11133CSCL-G
IC1707 TK11150CSCL-G
IC3050 TK11118CSCL-G
5
OVER HEAT &
OVER CURRENT
PROTECTION
CONTROL
CIRCUIT
TSD
–
BANDGAP
+
REFERENCE
1 2
62 62
5 4
OVER HEAT &
OVER CURRENT
PROTECT
2 3
5 CD
DELAY
CIRCUIT
4 NC
4
–
+
3