Kenwood KDC-W5031Y Service Manual page 6

KDC-MP5029/W5031
/W5031Y/W531Y
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name
40~42 PS1-1~PS1-3
43 KEY CDEJ
44 PON CD
45 CD MUTE
46 CD MSTOP
47 CD LOE LIM SW
48 CD LOEJ
49 CD MOTOR
50 CD DISC8 SW
51 CD MRST
52 CD SCL
53 CD DISC12 SW
54 CD LOS SW
55 CD SDA
56 OEM DISP CE
57 OEM DISP CLK I/O
58 OEM DISP DATA I/O
59 EJECT ILLUMI
60 RESET
61 PANEL DET
62 PON FL
63 KEY REQ
64 RDS CLK
65 REMOTE
66 LX REQ S
67 VSS0
68 VDD1
69,70 X2, X1
71 TEST
72,73 XT2, XT1
74 VDD0
75 AVDD
76~78 TYPE 3~TYPE 1
79 RDS NOISE
80 TUN SMETER
6
I/O Application
O Power supply control output
I Eject key
I/O Power supply control for MP3/WMA
I CD mute request
CD mecha µ-com stop
O
I CD detection (chucking switch)
I/O CD motor control
O CD motor control
-
CD mecha µ-com reset
O
I/O CD mecha I2C clock output
I 12cm CD detection
I CD loading detection
I/O CD mecha I2C data input and output
I/O External display chip enable
External display clock
External display chip data
O Eject illumination control
I
I Panel detection
O VFD power supply ON
I Communication request from VFD driver
I RDS decoder clock input
I Remote control input
I Communication request from slave unit
-
-
-
-
-
-
-
I Destination switch
I Tuner quality (Noise) input
I Tuner S-meter input
Processing Operation
Refer to "POWER IC CONTROL" on the TRUTH TABLE
L : Eject
ON : L, OFF : Hi-Z
L : Mute request
H : mecha µ-com operates, L : mecha µ-com is stopped
H : Loading is finished, L : Disc does not exist
Refer to "CD MECHA CONTROL OPERATION" on the
TRUTH TABLE
Refer to "CD MECHA CONTROL OPERATION" on the
TRUTH TABLE
H : Normal condition, L : Reset
External display
External display
External display
LED ON : H, LED OFF : L
LED ON when FLIP-DOWN DET is H and PANEL DET is L.
LED blinks when FLIP-DOWN DET is H and PANEL DET is L.
Panel OFF : L, Panel ON : H
VFD ON : H, VFD OFF : L
Flip-down detection H : L, Flip-down detection L : H
L : Key input