Yamaha KX-E300 Service Manual page 15

IC205 : M38B57M6-143FP (XW379B00)
Pin No. PORT I/O IN
1 P75/AN5 I Mecha SW1
2 P74/AN4 I Loading SW
3 P73/AN3 I Meter L
4 P72/AN2 I Meter R
5 P71/AN1 I Operation 2
6 P70/AN0 I Operation 1
7 P61/CN0,2 O DOLBY-B
8 P60/CN1 O DOLBY-OFF OFF : H
9 P47/INT2 I AC Pulse
10 RESET I Reset
11 P91/XCO O METAL
12 P90/XCI O HIGH
13 VSS GND
14 XIN 4MHz
15 XOUT 4MHz
16 VCC Vu
17-22 P41-P46 I (Pull down)
23 P40/INT0 I Power SW
24 P87/PWM O REC MUTE
25-27 P84-P86 I (Pull down)
28 VEE -22V
29 P83/FL35 I Power ON
30 P82/FL34 O FL-DIG11
31 P81/FL33 O FL-DIG10
32 P80/FL32 O FL-DIG9
33 P37/FL31 O FL-DIG8
34 P36/FL30 O FL-DIG7
35 P35/FL29 O FL-DIG6
36 P34/FL28 O FL-DIG5
37 P33/FL27 O FL-DIG4
AD INPUT PORT
PIN NAME VOLTAGE AREA
6 AN0 (ope 1) 4.58 – 5.00
3.75 – 4.58
2.92 – 3.75
2.10 – 2.92
1.25 – 2.10
0.41 – 1.25
0.00 – 0.41
5 AN1 (ope 2) 4.58 – 5.00
3.75 – 4.58
2.92 – 3.75
2.10 – 2.92
1.25 – 2.10
0.41 – 1.25
0.00 – 0.41
OUT RESISTOR Pin No.
AD(PLAY, Half) PU 38
AD(IN,OUT) PU 39
AD(-30 – +6) 40
AD(-30 – +6) 41-48
AD(FF,REW,REC,COU,EJ) PU 49
AD(ST,PL,DIR,DOL,MOD) PU 50
B : H 51
PU 52
53
Reset : L PU 54
METAL : H 55
HIGH : H 56
57-64
65
66
67
PD 68
ON : L PU 69
ON : L (PWMControl) 70
PD 71
72
ON : H 73
ON : H PD 74
ON : H PD 75
ON : H PD 76
ON : H 77
ON : H 78
ON : H 79
ON : H 80
ON : H
STANDARD VOLTAGE
5.00
4.17
3.34
2.51
1.67
0.83
0.00
5.00
4.17
3.34
2.51
1.67
0.83
0.00
PORT I/O IN
P32/FL26 O FL-DIG3 ON : H
P31/FL25 O FL-DIG2 ON : H
P30/FL24 O FL-DIG1 ON : H
P10-P17 O (Open)
P07/FL15 I (Open)
P06/FL14 O FL-SEG7 ON : H
P05/FL13 O FL-SEG6 ON : H
P04/FL12 O FL-SEG5 ON : H
P03/FL11 O FL-SEG4 ON : H
P02/FL10 O FL-SEG3 ON : H
P01/FL9 O FL-SEG2 ON : H
P00/FL8 O FL-SEG1 ON : H
P20-P27 I (Pull down)
P57/SC22 I SYS-IN
P56/SC21 O SYS-OUT
P55/TD I Reel pulse
P54/RD O Solenoid ON : H
P53/SC12 O Main motor ON : H
P52/SC11 O Loading IN : H
P51/SO1 O Loading+ OUT : H
P50/SI1 O N/H/M NOR:L,HIGH:M,MET:H
AVSS GND
VREF +5V
P65/AN11 O BIAS ON : L
P64/AN10 O REC/PB PB : L
P63/AN9 I (Pull down)
P62/AN8 O LINE MUTE ON : L
P77/AN7 I Mecha SW3 AD(Error erase F,Error erase R)
P76/AN6 I Mecha SW2 AD(70,METAL)
MODE
OFF
–
MODE
DOLBY
DIREC.
PLAY
STOP
OFF
–
EJECT
COUN.
REC
REW
FF
KX-E300
OUT RESISTOR
PD
PD
PD
PD
PD
PU
PD
PD
PD
PU
PU
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