7
KDC-W4044UA/W4044UAY/W4044UG/W4044UGY
KDC-W413UA/W413UAY/W4544U/W4644UY
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No.
Pin Name
I/O
Application
Truth Value
Table
Processing Operation Description
41
EPM
I
Flash ROM EPM input
L: Possible to rewrite
fl
ash ROM
Connects to VSS (Never set it to output Hi)
42
CD MOTOR
I/O CD motor control
q
Refer to the truth value table
43
NC
-
Not used
Output L
fi
xed
44
CD DISC12 SW
I
12cm disc detection
45
NC
-
Not used
Output L
fi
xed
46
VFD CE
O
VFD control request
47
NC
-
Not used
Output L
fi
xed
48
ROTARY CCW
I
VOL key input (Counter-clockwise)
Detects pulse width
49
ROTARY CW
I
VOL key input (Clockwise)
Detects pulse width
50
NC
-
Not used
Output L
fi
xed
51
RDS DATA
I/O RDS decoder data input
52
RDS QUAL
I
RDS decoder QUAL input
53
CD MUTE
I
CD mute request
H: Normal, L: Mute request
54
S SOC REQ
I
Communication request from SOC to system
μ
-COM
55
SOC RST
O
SOC reset
H: Normal, L: Reset
56
SOC S STOP
O
SOC stop
H: Normal, L: SOC stopped
57
S SYS REQ
O
Communication request from system
μ
-COM
to SOC
58~61
NC
-
Not used
Output L
fi
xed
62
VCC2
-
63
NC
-
Not used
Output L
fi
xed
64
VSS
-
65
RDS NOISE
I
FM noise detection
66
TUN SMETER
I
S-meter input
67
TUN IFC OUT
I
Front-end IFC-OUT input
H: Station detected, L: No station
68
AUD DC ERR
I
DC offset detection
If DC offset is detected 20 times in 100ms with
condition below 1.0V, it will be judged as DC offset
is detected.
69
LX RST
O
Forced reset to slave unit
H: Reset, L: Normal
70
LX CON
O
Start-up request to slave unit
H: Slave unit ON, L: Slave unit OFF
71
LX MUTE
I
Mute request from slave unit
H: Mute ON, L: Mute OFF
72
LX REQ M
O
Communication request to slave unit
73
PWIC SVR
O
SVR discharge circuit
During 500ms after power OFF or momentary
power-down: H, Since then: L
74
RDS CLK
I/O RDS decoder clock input
75
LX REQ S
I
Communication request from slave unit
76
PWIC STBY
O
Power IC standby control
Power ON: H, Power OFF: L
77
PWIC MUTE
O
Power IC mute
STANDBY source or momentary power-down: L,
TEL mute: L
