Sony DAV-DX375 / HCD-DX375 Service Manual ▷ View online
69
HCD-DX375
– I/O Board –
IC201 MM1623BFBE
1
VCC1
2
C IN
3
MUTE 1
4
CVBS IN
28 VCC2
23 CVBS OUT
25 S1
150k
Ω
BIAS
12
CB IN
150k
Ω
BIAS
CLAMP
6dB
6dB
6
Y IN
7
GND1
8
BIAS
CLAMP
BIAS
6dB
9
I/P
10
CY IN
11
CLP
13
MUTE2
5
YC MIX
+
6dB
–6dB
6dB
27 S-DC OUT
24 S2
LOW-PASS
FILTER
21 Y OUT
22 GND2
6.75MHz
75
Ω
DRIVER
LOW-PASS
FILTER
6.75MHz
75
Ω
DRIVER
20 CY OUT
75
Ω
DRIVER
S-DC OUT
S1/S2
26 C OUT
LOW-PASS
FILTER
6.75MHz
75
Ω
DRIVER
CLAMP
150k
Ω
BIAS
LOW-PASS
FILTER
6.75MHz
LOW-PASS
FILTER
13.5MHz
18 CB OUT
19 GND2
17 GND2
15 GND2
75
Ω
DRIVER
LOW-PASS
FILTER
6.75MHz
LOW-PASS
FILTER
13.5MHz
14
CR IN
150k
Ω
BIAS
16 CR OUT
75
Ω
DRIVER
LOW-PASS
FILTER
6.75MHz
LOW-PASS
FILTER
13.5MHz
6dB
6dB
IC352 MC14052BDR2
2 3
4
5
6 7 8 9 10
11
17 16 15 14 13 12
CONTROL
CIRCUIT
12 BIT
SHIFT
REGISTER
12 BIT
STORAGE
REGISTER
OUTPUT
BUFFER
(OPEN DRAIN)
19
20
VDD
OE
Q11
18
Q11
Q10
Q9
Q8
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
LCK
CLK
DATA
NC
1
VSS
– LED Board –
IC803 BU2099FV
1
2
3
4
5
6
7
8
9
CONTROL LOGIC
TSD
VREF
OUT2
OUT1
RNF
VM
VCC
FIN
GND
RIN
– RELAY Board –
IC701, IC711 BA6956AN
70
HCD-DX375
• IC Pin Function Description
MAIN BOARD IC501 M30622MEP-A61FPU0 (SYSTEM CONTROLLER)
MAIN BOARD IC501 M30622MEP-A61FPU0 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
DAMP_SCDT/
O
DAMP processor and Diat data output
DIAT_SDATA
2
DAMP_SHIFT/
O
DAMP processor and Diat clock output
DIAT_SCLK
3
DSP_INTR
I
DSP interrupt (not used)
4
SIRCS_IN
I
Sircs input
5
DSP_MOSI/DIR_DIN
O
DSP and DIR data output (not used)
6
DSP_MISO
I
DSP data input (not used)
7
DSP_SPICLK/DIR_CLK
O
DSP/DIR clock output (not used)
8
BYTE
I
External data bus (Ground terminal)
9
CNVSS
I
Change processor mode (Pull down)
10
EN_A/DAMP FSDLY
I
Volume control for ENCODER (Pull up)
11
EN_B/FL_RESET
I
Volume control for ENCODER (Pull up)
12
RESET
I
System reset signal input
13
XOUT
O
Crystal output for main clock (5MHz)
14
VSS
—
Ground terminal
15
XIN
I
Crystal input for main clock (5MHz)
16
VCC
—
Power supply (BUP+3.3V)
17
NMI
I
BUP +3.3V
18
DIR_ZERO
I
DIR zero data detect (not used)
19
DIR_CSFLAG/A.CAL
_OUT_LEVEL
I
Out level detect for auto calibration
20
AC_CUT
I
Detect AC-CUT
21
FL_CLK/LED_CLK
O
FL and LED driver clock output
22
LED_LAT
O
LED driver latch
23
DIAT_CSOD
I
DIAT CSOD signal input (not used)
24
FL_D_OUT/LED_DATA
O
FL and LED driver data output
25
FL_CS/STB
O
FL driver chip select
26
MIC_GAIN
O
MIC gain control
27
CDM_OPEN_SW
I
CDM open switch input
28
DC_CONT
O
A.CAL MIC DC control output
29
I2C_CLK
I/O
I
2
C clock input
30
I2C_DATA
I/O
I
2
C data input
31
DVD_SID
O
Media Tek data out/Flash write TXD1
32
DVD_SOD
I
Media Tek data in/Flash write RXD1
33
DVD_SCO
I
Media Tek clock in/Flash write CLK1
34
DVD_XIFBUSY
O
Media Tek busy request/Flash write RTS1
35
XM_SC_TX_OUT/
MIC_DET_OUT
O
MIC detect status out to Media Tek (not used)
36
XM_SC_RX_IN/
KARAOKE MODE
I
KARAOKE mode information from Media Tek (not used)
37
DVD XIFCS
I
Media Tek chip select
38
MTK RST
O
Media Tek reset
39
P_CONT1
O
Control for power supply 1
40
P_CONT2
O
Control for power supply 2
41
P_CONT3
O
Control for power supply 3
42
DRIVE_RST (EN)
O
DAMP driver reset
Ver. 1.1
71
HCD-DX375
Pin No.
Pin Name
I/O
Description
43
DRIVE_OCP (DIAG)
I
DAMP driver shut down
44
OVERFLOW1
I
DAMP processor F/C/S over flow detect
45
OVERFLOW2
I
DAMP processor SW over flow detect
46
CE
I
Flash write CE (not used)
47
DAMP LATCH1
O
DAMP processor latch1
48
DAMP LATCH2
O
DAMP processor latch2
49
DAMP LATCH3
O
DAMP processor latch3
50
DAMP INIT
O
DAMP processor reset
51
DAMP SOFT MUTE
O
DAMP processor soft muting
52
HP_SW
I
Head phone detect
53
HP_MUTE
O
Head phone muting
54
SRC_MUTE
O
Sampling rate converter mute control (not used)
55
DSP_RESET
O
DSP reset (not used)
56
DSP_SPIDS
O
DSP device select (not used)
57
SEL_SA-CD
O
DSP input data select (not used)
58
DSP_RST
O
DIR reset (not used)
59
DSP_HCE
O
DIR chip enable (not used)
60
DAMP OUT2DLY/
DIR_ERR
I
DAMP OUT 2DLY select switch
61
DAMP FSDLY/
DIR_XSTATE
I
DAMP FSDLY select switch
62
VCC
—
Power supply (BUP 3.3V)
63
DIR_HDOUT
I
DIR data in (not used)
64
VSS
—
Ground terminal
65
DIAT_XRST
O
DIAT reset (not used)
66
DIAT_XSCEN
O
DIAT chip enable (not used)
67
SRC_MODEO
O
Sampling rate convertor MODEO control (not used)
68
M_ST
O
LINK (Multi STEREO) control
69
TUNED
I
TUNER tuned input
70
ST_CLK
O
TUNER clock output
71
ST_DO
I
TUNER data input
72
ST_CE
O
TUNER chip enable
73
ST_DI
O
TUNER data output
74
KEY INT
I
Wakeup from ECO mode by Power key input
75
RDS_CLK/MIC_CLK/
XM_ERR_IRQ
O
not used
76
RDS-DATA/MIC-DAT/
XM_COM_SEL
O
not used
77
XM_RESET
O
XM reset (not used)
78
DABSEL/XMSEL
O
XM clock select (not used)
79
V_SEL0
O
VIDEO selector 0
80
V_SEL1
O
VIDEO selector 1
81
TVSEL/V_SEL3
O
TV / VIDEO selector 3 (not used)
82
A_SEL0
O
Audio selector 0
83
A_SEL1
O
Audio selector 1
84
V_SEL2
O
VIDEO selector 2
85
IO_CE
O
I/O expander IC chip enable
86
IO_RESET
O
I/O expander IC reset
87
IO_DI
O
I/O expander IC data output
Ver. 1.1
72
HCD-DX375
Pin No.
Pin Name
I/O
Description
88
IO_DO
I
I/O expander IC data input
89
IO_CLK
O
I/O expander IC clock output
90
MONO/ST_DET
I
Front jack MONO or STEREO detect
91
A.CAL MIC LEVEL/
I
MIC level detect for auto calibration
A_SEL2
92
DESTINATION
I
Destination select input
93
MODEL
I
Model select input
94
KEY2
I
Key input 2 input
95
KEY1
I
Key input 1 input
96
VSS
—
Ground terminal
97
KEY0
I
Key input 0 input
98
VREF
—
Reference voltage (BUP+3.3V)
99
VCC
—
Power supply (BUP+3.3V)
100
MIC/A.CAL SW
I
MIC insert switch
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