Kenwood KCD-BT6544U/UY Service Manual page 8

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