Kenwood KDC-MP408U Service Manual page 7

MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name I/O
83,84 NC -
85 MUTE 0 O
86 MUTE 1 O
87 MUTE 2 O
88 MUTE PRE FR O
89 MUTE PRE SW O
90 RDS NOISE I
91 TUN SMETER I
92 LX MUTE I
93 LX CON O
94 AVSS -
95 LX RST O
96 VREF -
97 AVCC -
98 LX DATA S I
99 LX DATA M O
100 LX CLK I/O LX-BUS clock
Truth value table
q CD motor control
CD MOTOR (Pin53)
Stop L
Load H
Eject H
Brake H
Application
Not used
E-VOL front mute
E-VOL rear mute
E-VOL SW mute
PRE-OUT mute for FR
PRE-OUT mute for SW
FM noise detection
S-meter input
Communication request from slave unit
Start-up request to slave unit
Forced reset to slave unit
Data from slave unit
Data to slave unit
CD LOEJ (Pin52)
L
L
H
Hi-z
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
Truth Value
Processing / Operation / Description
Table
Output L fi xed
L: ON, H: OFF
L: ON, H: OFF
L: ON, H: OFF
Mute is L during CD play: L
Momentary power down: L
Only condition when DUAL ZONE or NAVI INT:
H fi xed
L: Mute ON, H: Mute OFF
H: Mute ON, L: Mute OFF
H: Slave unit ON, L: Slave unit OFF
H: Reset, L: Normal condition
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