Ic Data - Yamaha GX-505 Service Manual

IC DATA

IC8 : M38199EF [CD/VCD P.C.B.]
µ
8 bit -COM (CD CPU)
P87/SEG15
P86/SEG14
P85/SEG13
P84/SEG12
P83/SEG11
P82/SEG10
P81/SEG9
P80/SEG8
PA7/SEG7
PA6/SEG6
VCC
PA5/SEG5
PA4/SEG4
PA3/SEG3
PA2/SEG2
PA1/SEG1
PA0/SEG0
VEE
AVSS
VREF
Pin No. Port
1 P77
2 AN6
3 P75
4 P74
5 P73
6 P72
7 P71
8 P70
9 PB3
10 PB2
11 P57
12 P56
13 P55
14 P54
15 P53
16 P52
17 P51
18
P50
19 P67
20 P66
21 P65
22 P64
23 P63
24
P62
25 P61
26 P60
27 P47
28 P46
29 INT1
30 INT4
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
Name I/O
ADR I Tray table address detect SW
NTSC I
Video out PAL/AUTO/NTSC select detect
OPSW I Tray open SW
/CLSW I Tray close SW
/STOP I Tray table STOP position detect SW
/UPSW I Clamper up SW
/DWSW I Clamper down SW
/FLOCK I Focus servo lock
Open
Open
/TLOCK I Tracking servo lock
/SCLK O Serial clock to servo LSI
SOUT O Serial out to servo LSI
SIN I Serial in from servo LSI (Q-code or SENSE)
HSEL O
Address/data select signal
/SCLKD O
Serial clock from decoder
SOD O
Serial out to decoder
SID I
Serial in from decoder
/CS I System communication chip enable
Serial clock from system µ-COM
/DCLK I
Serial out to system µ-COM
DSO O
Serial in from system µ-COM
DSI I
STAT I Servo status signal
Not used
Not used
I Feed origin SW
/FLSW
/HRDY I Decoder data out OK signal
Open
BLKCK I Q-code read OK signal
Open
GX-505/GX-505VCD
50 P16/DIG14
49
P17/DIG15
48 P20/DIG16
47 P21/DIG17
46 P22/DIG18
45
P23/DIG19
44
P24
43
P25
42
P26
41
P27
40
VSS
39
X OUT
38 X IN
37
PB0/XC OUT
36
PB1/XC IN
35
RESET
34 P40/INT0
33 P41
32
P42/INT2
31
P43/INT3
Function
(GX-505VCD only))
(GX-505VCD only))
(GX-505VCD only))
(GX-505VCD only))
(GX-505VCD only))
(Auto transfer)
(GX-505VCD only))
24