Sony HT-CT380 Service Manual page 48

HT-CT380/CT381
• IC Block Diagrams
– MAIN Board –
IC1003 PST8429UL
GND 1
VREF
+
–
4 OUT
VDD 2 3 CD
IC1009 RT8295ALZSP
IC2012, 3705 RT8293ALZSP
8 7 6 5
VCC
2.7V 1.2V
0.8V 0.4V
INTERNAL
REGULATOR
VA VCC
OSCILLATOR
SLOPE COMP
FOLDBACK
CONTROL
S R
VA
CURRENT SENSE
Q Q
AMPLIFIER
1 2 3 4
IC1013, 2007 MM3411A33URE
4 VDD
CE 1 BIAS
VOLTAGE
–
REFERENCE
+
CURRENT
LIMIT 3 VOUT
GND 2
HT-CT380/CT381
IC1008, 3105, 3106 BD00IC0WEFJ-E2
8 7 6 5
OVER CURRENT
PROTECT
SOFT
+
START
+
THERMAL
SHUTDOWN
1 2 3 4
IC1011 R1154N001C-TR-FE
5 CE
VOUT 1
4 ADJ
THERMAL
PROTECTION
–
+
VREF
SHORT PEAK CURRENT
PROTECTION PROTECTION
GND 2
VDD 3
IC1012 BMA250E
12 11
10 CSB
9 GND
ADC C/V
SDO 1 8 GNDIO
SDI 2 7 VDD
ADC C/V
VDDIO 3
NC 4 ADC C/V
NVM
SLOW
VOLTAGE
OSC
REGULATORS
+
FAST
POWER CONTROL
OSC
5 6
IC2003 SN74LV4052APWR
2Y0 1 16 VCC
15 1Y2
2Y2 2
14 1Y1
2-COM 3
13 1-COM
2Y3 4
12 1Y0
2Y1 5
INH 6 11 1Y3
GND 7 10 A
GND 8 9 B
IC2005 PCM9211PTR
36 35 34 33 32 31 30 29 28
RXIN0 37
RECOUT1
POWER
SUPPLY RECOUT0
DIR
ADC CLOCK
GNDRX 38 ANALOG
(SCK/BCK/LRCK)
DIVIDER
XMCKO
XTI 39 (TO MPIO_A & MPO0/1)
XMCKO
OSC
DIVIDER
XTO 40
DIR
CLOCK/DATA LOCK
PLL
RECOVERY DETECTION
POWER SUPPLY
AGND 41 DIR
VCC 42 ANALOG
FILT 43
A/D
CONVERTER
ANALOG
VCOM 44 COM. SUPPLY ADC
AGNDAD 45
VCCAD 46
VINL 47
A/D
A/D CONVERTER
CONVERTER MODE ADC_STANDALONE
CONTROL
VINR 48
SECONDARY BCK/LRCK
DIVIDER SELECTOR
IC2006, 3107 MM1839A50NRE
5 VIN
CONT 1 BIAS
CURRENT
LIMIT
–
REGULATOR
+
4 VOUT
VOLTAGE THERMAL
REFERENCE SHUTDOWN
GND 2
NC 3
IC2011 74LVC1G79GW-125
D 1
C
C TG
C
C
_
TG TG
C
CP 2
_ TG
_
C
C
_
C
C
_
GND
3 C
48 48
27 26 25
24 MD1/SDA
23 MD0/ADR0
RESET & SPI/I2C
MODE SETTING INTERFACE
POWER
SUPPLY
22 DVDD
ALL
21 DGND
REGISTER
AUTO
DIR RXIN7
20 SCKO
ADC DOUT
MAIN
19 BCK
AUXIN0 OUTPUT
SCKO/BCK/LRCK 18 LRCK
AUXIN1 PORT
17 DOUT
AUXIN2
RECOUT1
RECOUT0 MPO0/1 16 MPO1
AUTO DITOUT SELECTOR 15 MPO0
DIR
ADC
AUXIN0 DIT
AUXIN1
AUXIN2
AUTO
DIR
ADC AUXOUT
14 MPIO_B3
AUXIN0
13 MPIO_B2
MPIO_B
AUXIN1
SELECTOR
AUXIN2
ADC
EXTRA DIR MPIO_A MPIO_C
FUNCTIONS SELECTOR SELECTOR
1 2 3 4 5 6 7 8 9 10 11 12
IC2010 TC74VHC157FT (EK)
SELECT 11 1 16 V
CC
S
1A 2 1A G 15 STROBE
INPUT
3 14 4A
1B 1B 4A
INPUT
OUTPUT 1Y 4 1Y 4B 13 4B
2A 5 2A 4Y 11 12 4Y OUTPUT
INPUT
6 11 3A
2B 2B 3A
INPUT
OUTPUT 2Y 7 2Y 3B 10 3B
3Y
GND 8 9 3Y OUTPUT
VCC
5
4 Q