5
KDC-3047M/MP1046/MP145/MP145CR/MP146/MP2046
/MP245/MP246AM/MP246G/MP246S/MP3046
Pin No. Pin Name I/O Application
Truth Value
Table Processing / Operation / Description
42~45 NC - Not used Output L fixed
46 VFD CE O VFD control request
47 ROTARY CCW I VOL key input Detects pulse width
48 ROTARY CW I VOL key input Detects pulse width
49 PON PANEL I/O Panel 5V control ON: L, 11 minutes after momentary power-down or
panel detached or ACC OFF: Hi-Z
50 PON FL O Key illumination power supply control ON: H, OFF: L
51~59 NC - Not used Output L fixed
60 RDS DATA I/O RDS decoder data input
61 RDS QUAL I RDS decoder qualification input
62 VCC2 -
63 NC - Not used Output L fixed
64 VSS -
65 NC - Not used Output L fixed
66 MUTE I/O Mute L: Mute OFF, Hi-Z: Mute ON
67~73 NC - Not used Output L fixed
74 RDS CLK I/O RDS decoder clock input
75,76 NC - Not used Output L fixed
77 AUD SDA I/O E-VOL data input/output
78 AUD SCL I/O E-VOL data output
79 NC - Not used Output L fixed
80 PWIC STBY O Power IC standby control POWER ON: H, POWER OFF: L
81 TYPE1 I Destination SW
82 TYPE2 I Destination SW
83 TYPE3 - Not used Output L fixed
84 NC - Not used Output L fixed
85 AUD DC ERR I DC offset detection
If DC offset is detected 20 times in 100ms with condi-
tion below 1.0V, it will be judged as DC offset is de-
tected.
86 CD SW1 I Disc insertion detection
87 PWIC DC ERR I Detection of power IC +B/GND short-
circuit L: Wrong connection
88 LINE MUTE I Line mute detection TEL mute: Below 1V, NAVI mute: Over 2.5V
89 BU DET I Momentary power-down detection
BU found: L, No BU or momentary power-down: H
(Operates within 4ms after momentary power-down is
detected)
90 ACC DET I ACC power supply detection ACC found: L, No ACC: H
91 PWIC MUTE O Power IC mute STANDBY source or momentary power-down: L,
TEL mute: L
92 PS2 1 O Power supply IC control wRefer to the truth value table
93 PS1 1 O Power supply IC control wRefer to the truth value table
94 PS1 2 O Power supply IC control wRefer to the truth value table
MICROCOMPUTER’S TERMINAL DESCRIPTION
