AIWA CDC-X144 Service Manual - Page 4

AIWA CDC-X144 Manual

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CDC-R104/X104/X144 • 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 CD servo IC command/parameter identification signal output 40 CD A0 O 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 16

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16
CDC-R104/X104/X144
• 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