Kenwood KDC-MP4033 Service Manual page 5

MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name
22 LX RST
23 LX CON
24 LX REQ M
25 AUD SDA
26 AUD SCL
27 PWIC STBY
28 VOL MUTE
29 PWIC MUTE
30 TUNER FANC OUT
31 RESET2
32 RDS DATA
33 VSS1
34 RDS QUAL
35 ACC DET
36 BU DET
37 PON
38 PS2-2
39 PS2-1
40 PS1-1
41 PS1-2
42 PS1-3
43 NC
44 PON CD
45 CD MUTE
46 CD MSTOP
47 CD LOE LIM SW
48 CD LOEJ
49 CD MOTOR
50 NC
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
58 OEM DISP DATA
59 DSI
60 RESET
61 NC
62 PON FL
I/O Application
O Forced reset to slave unit
O Start-up request to slave unit
O Communication request to the slave unit
I/O E-VOL and tuner I2C data input/output
I/O E-VOL and tuner I2C CLK output
O Power IC STBY output
O E-VOL mute output
O Power IC mute output
Tuner block (in µ-com) check
O
O Mute for reset
I RDS decoder data input
-
I RDS decoder QUAL input
I ACC detection
I Momentary power down detection
I/O SW5V/SW14V control
O Power Supply control output 2-2
O Power Supply control output 2-1
O Power Supply control output 1-1
O Power Supply control output 1-2
O Power Supply control output 1-3
-
I/O Power supply control for MP3
I CD mute request
CD mechanism µ-com stop
O
I CD detection (chucking SW)
I/O CD motor control
O CD motor control
-
CD mechanism µ-com reset
O
I/O CD mechanism I2C clock output
I 12cm disc detection
I CD loading detection
I/O CD mechanism I2C clock input/output
I/O External display CE
I/O External display CLK
I/O External display DATA
O DSI control
-
-
O VFD power supply ON
KDC-MP2032/MP232/MP4033/
KDC-MP4033S/W4534/W4534Y
Truth Value
Processing/Operation/Description
Table
H: Reset, L: Normal
H: Slave unit ON, L: Slave unit OFF
H: Power IC ON, L: Power IC OFF
L: Mute OFF, Hi-Z: ON
L: Power OFF, STANDBY, or TEL mute.
L: E2P OK, H: NG
Output L
L: ACC ON, H: ACC OFF
L: BU found,
H: BU not found (momentary power down)
L: ON, Hi-Z: OFF
e
Refer to the truth value table
e
Refer to the truth value table
e
Refer to the truth value table
e
Refer to the truth value table
e
Refer to the truth value table
L: ON, Hi-Z: OFF
L: Mute request
H: Mechanism µ-com in operation,
L: Mechanism µ-com stopped
H: Loading completed, L: Disc not found
r
Refer to the truth value table
r
Refer to the truth value table
H: Normal, L: Reset
External display
External display
External display
H: DSI ON, L: DSI OFF
TDF DET=blink when H
H: ON, L: OFF
L: When TDF DET is H, H: When TDF DET is L
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