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8
KDC-BT7539U/BT8041U
/BT8141UY/BT838U
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No.
Pin Name
I/O
Application
Truth
value table
Processing Operation Description
54
OEM_DISP_CLK I/O External display CLK
External display
54
NC
O
Not used (Models without BT/Models
without OEM_DISP)
Output is
fi
xed to L
55
OEM_DISP_CE
I/O External display control request
External display
55
NC
O
Not used (Models without BT/Models
without OEM_DISP)
Output is
fi
xed to L
56
P_CON
I/O PCON control terminal
POWER ON: H, POWER OFF: Hi-Z
STBY source: Hi-Z
57
ANT_CON
O
ANTCON control terminal
TUNER source (including while receiving RDS): H
POWER OFF: L, STBY source: L
58
NC
O
Not used (Models without EXT_AMP)
Output is
fi
xed to L
59
ILLUMI_DET
I
Dimmer illumi detection
L: ON, H: OFF
60
VCC2
-
61
MUTE_0
O
EVOL FRONT MUTE control
L: Mute ON, Independent setup of time constant 10ms,
H: In normal condition
62
VSS
-
63
MUTE_1
O
EVOL REAR MUTE control
L: Mute ON, Independent setup of time constant 10ms,
H: In normal condition
64
MUTE_2
O
IC-2 SW MUTE control
L: Mute ON, Independent setup of time constant 10ms,
H: In normal condition, Shall be shared with MUTE_
PRE_SW, IC2 shock noise measure
65
LINE_MUTE
I
Line mute detection
TEL MUTE: 1V or less, NAVI MUTE: 2.5V or more
66
NC
O
Not used
Output is
fi
xed to L
67
BT_RST
O
BT module reset terminal
H: Normal, H: BT reset
67
NC
O
Not used (Models without BT)
Output is
fi
xed to L
68
NC
O
Not used
Output is
fi
xed to L
69
MUTE_SA
I/O
IC-2 MUTE_A control
Spectrum analyzer MUTE
L: Mute ON, Independent setup of time constant 0.5ms,
Hi-Z: In normal condition
70
PWIC_DC_DET
I
DC offset detection terminal
71
ACC_DET
I
ACC detection
ACC detected: L, ACC not detected: H
72
BU_DET
I
BU detection
BU detected: L
BU not detected/Reduced voltage/Over-voltage: H
73
LX_REQ_S
I
Communication request from slave unit
73
NC
O
Not used (Models not-supporting LX-BUS)
Output is
fi
xed to L
74
MUTE_AFS
I/O
IC-2 MUTE_C control
AFS MUTE
L: Mute ON, Independent setup of time constant 0.5ms,
Hi-Z: In normal condition
74
MUTE_AFS
(Not-used)
I
Not used
Input is
fi
xed to Hi-Z
75
SDA/EVOL_SDA I/O
Data output from system
μ
-com to E.VOL
(System
μ
-com
→
E.VOL data output)
Communication speed 200-400k
75
PBOOK_SDA
I/O Data for BT telephone book memory
75
SDA/E2P_SDA
I/O I2C data for ROM correction
Communication speed 200-400k
76
SCL/EVOL_SCL I/O
Output from system
μ
-com to EVOLCLK
(System
μ
-com
→
EVOLCLK output)
Communication speed 200-400k
76
PBOOK_SCL
I/O Clock for BT telephone book memory
76
SCL/E2P_SCL
I/O I2C clock for ROM correction
Communication speed 200-400k
77
PWIC_MUTE
O
Power IC MUTE terminal
While in STANDBY source, or momentary power down: L
While TEL MUTE: L
78
PWIC_STBY
O
Power IC standby terminal
POWER ON: H, POWER OFF: L