Yamaha AX-397, Service Manual

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12
AX-397
AX-397
IC301 : M38503G4A-101FP (FUNCTION (1) P.C.B.)
8-bit Microprocessor
■
IC DATA / ICデータ
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
V
CC
V
REF
AV
SS
P4
4
/INT
3
/PWM
P4
3
/INT
2
/S
CMP2
P4
2
/INT
1
P4
1
/INT
0
P4
0
/CNTR
1
P2
7
/CNTR
0
//S
RDY1
P2
6
/S
CLK1
P2
5
/T
X
D
P2
4
/R
X
D
P2
3
P2
2
CNV
SS
P2
1
/X
CIN
P2
0
/X
COUT
/RESET
X
IN
X
OUT
V
SS
P1
7
/(LED
7
)
P1
6
/(LED
6
)
P1
5
/(LED
5
)
P1
4
/(LED
4
)
P1
3
/(LED
3
)
P1
2
/(LED
2
)
P1
1
/(LED
1
)
P1
0
/(LED
0
)
P0
7
(AN
8
)
P0
6
(AN
7
)
P0
5
(AN
6
)
P0
4
(AN
5
)
P0
3
//S
RDY2
P0
2
/S
CLK2
P0
1
/S
OUT2
P0
0
/S
IN2
P3
4
/AN
4
P3
3
/AN
3
P3
2
/AN
2
P3
1
/AN
1
P3
0
/AN
0
MCU
MCU
MCU
I
I
I
I
I
O
O
O
O/I
O
O
MCU
I
O
MCU
MCU
MCU
MCU
O
O
O
O
O
O
O
O
O
I
I
O
I
I
O
O
I
I
I
I
I
Power Supply, +5V
AD Reference
AD Ground
Power Down Detect
Tape Monitor /Pure Direct SW
SYSTEM Power SW
Remote Control (Wake up)
Release the Protection
Chip Enable (INPUT SEL)
Clock
Data
Tape Monitor (397)/Destination Distinction (497)
Motor Volume (UP)
Motor Volume (DOWN)
Vss: when single chip mode is used, Vcc: when flash writing is used
AX-497/397 Detect
CD Direct Mute
Reset
Oscillator In
Oscillator Out
Ground
LED (AUX)
LED (TAPE)
LED (MD)
LED (CD)
LED (TUNER)
LED (PHONO)
LED (POWER)
LED (CD DIRECT)
LED (TAPE MONITOR/PURE DIRECT)
Rotary Encoder (Left)
Rotary Encoder (Right)
Mute
CD Direct SW
Protection (Overload)
Speaker Relay
Power Relay
Protection (DC)
Protection (Power Supply)
Protection (Temperature Detection)
Protection (Temperature Detection)
Rec Out Selector Detect
No. Port I/O Function
PD
TPM/PD
PS
REM
PRINH
CEI
CK
DATA
TMO/DEST
VRUP
VRDN
CNV
SS
D43
CDM
LEDA
LEDTP
LEDM
LEDC
LEDT
LEDP
LSBY
LEDCDD
LEDTM/PD
ENL
ENR
MUTE
CDD
PRI
RYSP
RYPS
PRDC
PRPS
THMR
THML
REC
Name
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
V
CC
AV
SS
P4
4
/INT
3
/PWM
P4
3
/INT
2
/S
CMP2
P4
2
/INT
1
P4
1
/INT
0
P4
0
/CNTR
1
P2
7
/CNTR
0
/S
RDY1
P2
6
/S
CLK1
P2
5
/T
X
D
P2
4
/R
X
D
P2
3
P2
2
CNV
SS
P2
1
/X
CIN
P2
0
/X
COUT
RESET
X
IN
X
OUT
V
SS
V
REF
P3
0
/AN
0
P3
1
/AN
1
P3
2
/AN
2
P3
3
/AN
3
P3
4
/AN
4
P0
0
/S
IN2
P0
1
/S
OUT2
P0
2
/S
CLK2
P0
3
/S
RDY2
P0
4
/(AN
5
)
P0
5
/(AN
6
)
P0
6
/(AN
7
)
P0
7
/(AN
8
)
P1
0
/(LED
0
)
P1
1
/(LED
1
)
P1
2
/(LED
2
)
P1
3
/(LED
3
)
P1
5
/(LED
5
)
P1
6
/(LED
6
)
P1
7
/(LED
7
)
P1
4
/(LED
4
)