Sony CDC-X204 Service Manual page 16

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