Read Sony CDC-R304 / CDC-X104EE / CDC-X204 / CDC-X304 / CDC-X444 Service Manual online
16
CDC-R304/X104EE/X204/X304/X444
• IC501 MN101E01KAB (SYSTEM CONTROL) (MAIN BOARD (1/2))
Pin No.
Pin Name
I/O
Pin Description
1
DAVDD
—
Power supply pin for D/A output converter (+3.3 V)
2
BBE-MP
O
Not used in this set. (Open)
3
DAVSS
—
Ground pin for D/A output converter
4 to 6
NCO
O
Not used in this set. (Open)
7
UNISO
O
SONY-BUS data signal output Not used in this set. (Open)
8
UNISI
I
SONY-BUS data signal input Not used in this set.
9
UNICKO
O
SONY-BUS clock signal output Not used in this set.
10
VDD1
—
Power supply pin for internal core (+3.3 V)
11
MMOD
I
Flash microcomputer write detection signal input Not used in this set.
12
OSCOUT
O
High speed operation clock signal output (27 MHz)
13
OSCIN
I
High speed operation clock signal input (27 MHz)
14
VSS1
—
Ground pin for internal core
15
XIN
I
Low speed operation clock signal input (32.768 kHz)
16
XOUT
O
Low speed operation clock signal output (32.768 kHz)
17
VDD2
—
Power supply pin for internal core (+3.3 V)
18
MOD1
—
Pull up: “H”
19
RESET
I
Reset signal input
20
NCO
O
Not used in this set. (Open)
21
ACC IN
I
Accessory power supply detection signal input
22
TEST IN
I
Test mode detection signal input
23
TEL ATT
I
Telephone attenuate detection signal input
24
ATT
O
Audio mute control signal output
25
XKEYON
O
Key power supply control signal output Not used in this set. (Open)
26
NCO
O
Not used in this set. (Open)
27
KEYACK
I
Key acknowledge detection signal input
28
TU ATTIN
I
Tuner mute ZERO cross detection signal input
29, 30
NCO
O
Not used in this set. (Open)
31
BUIN
I
Back up power supply detection signal input
32
CD INTQ
I
CD servo IC CD text pack synchronization signal input
33
CD SO
O
CD servo IC serial data signal output (for command/text)
34
CD SI
I
CD servo IC serial data signal input (for command/text)
35
CD SCK
O
CD servo IC serial clock signal output (for command/text)
36
BUSON
O
BUS on signal output
37
SYSRST
O
System reset signal output
38
CD RFOK
I
CD servo IC RFOK signal input
39
CD RST
O
CD servo IC reset signal output
40
CD A0
O
CD servo IC command/parameter identification signal output
Command transmission: “L”, Parameter transmission: “H”
41
CD STB
O
CD servo IC data strob signal output
42
CD MUTE R
I
Mechadeck mute zero cross detection signal input R
43
CD MUTE L
I
Mechadeck mute zero cross detection signal input L
44
CD INSW
I
CD mecha disc in switch detection signal input
45
CD SELFSW
I
CD mecha self load position detection switch signal input
46
CD LM LO
O
CD mecha loading motor control signal output
47
CD LM EJ
O
CD mecha eject motor control signal output
48
CD DSW
I
CD mecha down switch detection signal input
49
CD LIMIT
I
CD mecha in-limit switch signal input
50
NCO
O
Not used in this set. (Open)
51
AREASEL1
I
Destination function setting input 1
52
AREASEL2
I
Destination function setting input 2
53
AREASEL3
I
Destination function setting input 3
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