8
KDC-BT6544U/BT6544UY
/BT7043U/BT742U
Pin No.
Pin Name
I/O
Application
Truth Value
Table
Processing / Operation / Description
80
ST DC DET
I
Wrong connection detection
81
E2P SDA
I/O E2PROM I2C data input/output
82
E2P SCL
I/O E2PROM I2C clock input/output
83
DC DET
I
DC offset detection
84
MUTE AFS
I/O AFS mute
L: Mute ON, Hi-Z: Mute OFF
85
MUTE 0
O
E-VOL Front mute
L: ON, H: OFF
86
MUTE 1
O
E-VOL Rear mute
L: ON, H: OFF
87
MUTE 2
O
E-VOL Sub Woofer mute
L: ON, H: OFF
88
MUTE PRE FR
O
PRE-OUT mute Front/Rear
Lo when mute is Lo (CD played).
Momentary power-down: L
H
fi
xed only when Dual Zone is ON.
89
MUTE PRE SW
O
PRE-OUT mute SW (Sub Woofer)
* For both PRE-OUT Rear selected and SW selected.
L: Mute, H: Mute OFF
Lo when mute is Lo (CD played).
Momentary power-down: L
90
RDS NOISE
I
FM noise detection
(Terminal for European model)
91
TUN SMETER
I
S-meter input
92
LX MUTE
I
Mute request from slave unit
H: Mute ON, L: Mute OFF
93
LX CON
O
Start-up request to slave unit
H: Slave unit ON , L: Slave unit OFF
94
AVSS
-
95
LX RST
O
Forced reset to slave unit
H: Reset, L: Normal
96
VREF
-
97
AVCC
-
98
LX DATA S
I
Data from slave unit
99
LX DATA M
O
Data to slave unit
100
LX CLK
I/O LX-BUS clock
MICROCOMPUTER’S TERMINAL DESCRIPTION
• Truth value table
q
CD motor control
CD motor
CD loading/eject
Stop
L
L
Load
H
L
Eject
H
H
Brake
H
Hi-z
