JVC CH-X550, Руководство по обслуживанию

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CH-X550
(No.49787)1-37
4.8 UPD780058GC-291(IC601):CPU
• Terminal layout
• Pin function
80 61
21 40
1
20
60
41
Pin
No.
PORT Name I/O Function
1 LCDDA O LCD driver data output
2 LCDSCK O LCD driver clock output
3 LCDCE O LCD driver chip enable output
4 GND - Connect to ground
5 VREF - Reference voltage output
6 POSCON O Position control output
7 AVREF1 - Connect to 5V
8 NC - Unused output port
9 NC - Unused output port
10 CDCHECK I CD check mode input. Reset only.
11 EPROMDI I/O EEPROM data input
12 EOROMDO O EEPROM data output.
Hi durring input.
13 EPROMCK I/O EEPROM clock input/output
14 NC - Unused output port
15 BUS I/O O JVC bus input/output control(Lo:input)
16 BUS SI I JVC bus data input
17 BUS SO O JVC bus data output
18 BUS SCK I/O JVC bus clock input/output
19 NC - Unused output port
20 NC - Unused output port
21 NC - Unused output port
22 NC - Unused output port
23 NC - Unused output port
24 NC - Unused output port
25 NC - Unused output port
26 CD ON O CD power control Hi:on
27 PWR CONT O Power supply control output Hi:on
28 POSMO+ O Position motor control output
29 POSMO- O Position motor control output
30 O Tray motor control output
31 TRAYMO- O Tray motor control output
32 BUCK - CD LSI data clock
33 GND - Connect to ground
34 LSI RESET O CD LSI reset
35 CCE I/O CD LSI chip enable
36 BUS0 I/O CD LSI data 0(open drain)
37 BUS1 I/O CD LSI data 1 (open drain)
38 BUS2 I/O CD LSI data 2 (open drain)
39 BUS3 O CD LSI data 3 (open drain)
40 NC - Unused output port
41 CD RW O CD-RW Detect signal output
42 NC - Unused output port
43 NC - Unused output port
44 MAG IN - Magazine switch
Lo:magazine inserted
45 TRAY OUT O Tray extend switch
Lo:extension complete
46 TRAY IN O Tray retract switch
Lo:retraction complete
47 REST I Resr switch
48 DISC SEL O Disc select output
49 EMPH O Emphasis select output Hi:on
50 NC - Unused output port
51 OE - Unused output port
52 SHOCK SW I Shock proof switch signal input
53 SHOCK O Shock proof output
54 NC - Unused output port
55 A.MUTE - Unused output port
56 MUTE PWR O Power supply for mute
57 STAGE I LCD,AD key,remote inhibit selector
Low:inhidit
58 STAGE2 - Unused output port
59 EPROM CLR I EEPROM clear input Functional only
dunng reset
60 RESET I Reset input
(includes flash write in function)
61 REMOCON I Remote controller signal input
62 PWR DET I Memory power detect input
63 PWR SW I CRTL+B detect input
64 BUS INT I JVC bus com start interrupt input
65 EJECT I Eject key input
66 NC - Unused output port
67 GND - Connect to ground
68 VDD0 - Conneto to VDD
69 X2 O Oscillater (4.19430 MHz)
70 X1 I Oscillater (4.19430 MHz)
71 GND - Connect to ground
72 XT2 O Open
73 XT1 I Connect to VDD
74 VDD - Connect to 5V
75 AVREF0 - Connect to ADCONT
76 L SENSOR I Linear sensor input(8 bit A/D input)
77 KEY1 I Key input 1 (8 bit A/D input)
78 KEY2 I Key input 2 (8 bit A/D input)
79 KEY3 I Key input 3 (8 bit A/D input)
80 KEY0 I Key input 0 (8 bit A.D input)
Pin
No.
PORT Name I/O Function