5
KDC-W4031/W4031Y/W409/W409Y
KDC-W431GY/W4531/W4531Y/WF431A
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No.
Active
Pin Name
I/O
Application
Processing Operation
(H/L)
11
L
VFD RST
O
Reset output to VFD driver
Display OFF, Key reset, TDF panel OFF : L
Display ON, Key scan : H
12
VFD CE
O
Chip enable output to VFD driver
13
ROTARY CCW
I
Rotary encoder input
14
L
TDF DET
I
TDF panel detection
TDF panel OFF : H, TDF panel ON : L
15
PWIC BEEP
O
Beep output
16
LX DATA S
I
Data from slave unit
17
LX DATA M
O
Data to slave unit
18
LX CLK
I/O
LX-BUS clock
19
RDS AFSL
O
Tuner RDS mute output
Refer to "RDS AFSL" on the TRUTH TABLE
20
L
TUN ADJ
I
For adjusting IC10
Adjustment=H, PS1-1,2=L, PS1-3=Hi-Z,
PS2-1,2=Hi-Z, TUN DATA, CLK=Hi-Z
21
TUN SD
I
Tuner search stop output
H : Station exists, L : Station does not exist
22
H
LX RST
O
Hard reset to slave unit
H : Reset, L : Normal condition
23
H
LX CON
O
Start-up request to slave unit
H : Slave unit ON, L : Slave unit OFF
24
LX REQ M
O
Communication request to slave unit
25
AUD SDA
I/O
Volume + tuner I2C data input and output
26
AUD SCL
I/O
Volume + tuner I2C clock input and output
27
H
PWIC STBY
O
Power IC standby output
Power IC ON : H, Power IC OFF : L
28
H
VOL MUTE
O
E-VOL mute output
L : Mute OFF, Hi-Z : Mute ON
29
L
PWIC MUTE
O
Power IC mute output
Power OFF : L, Standby : L, Tel mute : L
30
TUN FANC OUT
O
Tuner block (inside the
µ-com) check
OK : L, NG : H
31
RESET2
O
Mute for reset
Output L
32
RDS DATA
I
RDS decoder data input
33
VSS1
-
34
RDS QUAL
I
RDS decoder QUAL input
35
L
ACC DET
I
ACC detection
ACC exists : L, ACC does not exist : H
36
L
BU DET
I
Momentary power-down detection
BU exists : L
BU does not exist (Momentary power-down) : H
37
NC
-
38
PS2-2
O
Power supply control output
Refer to "POWER IC CONTROL" on the TRUTH TABLE
39
PS2-1
O
Power supply control output
Refer to "POWER IC CONTROL" on the TRUTH TABLE
40
PS1-1
O
Power supply control output
Refer to "POWER IC CONTROL" on the TRUTH TABLE
41
PS1-2
O
Power supply control output
Refer to "POWER IC CONTROL" on the TRUTH TABLE
42
PS1-3
O
Power supply control output
Refer to "POWER IC CONTROL" on the TRUTH TABLE
43,44
NC
-
45
CD MUTE
I
CD mute request
L : Mute request
46
L
CD MSTOP
O
CD mecha u-com stop
H : mecha
µ-com operates, L : mecha µ-com is stopped
47
CD LOE LIM SW
I
CD detection (chucking switch)
H : Loading is finished, L : Disc does not exist
