Kenwood KDC-M6021/G Service Manual page 6

KDC-M6021/G
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MICROCOMPUTER'S TERMINAL DESCRIPTION
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Pin No. Pin Name
49 TYPE0
50 TYPE1
51 TYPE2
52 IC2 TYPE0
53 IC2 TYPE1
54 PANEL DET
55 GUIDE ILL
56 M-MUTE L
57 M-MUTE R
58 BVDD
59 BVSS
60 M RST
61 M STOP
62 N.C
63 CD SW3
64 LO/EJ
65 MOSW
66 V-ILL CLK
67 L INH
68 V-ILL DATA
69 L CE
70 PANEL 5V
TE
L 13942296513
71 ILL ON
72 EJECT ILL/DSI I/O Eject key illumination control terminal
73 AVCONT
74 AVDD
75 AVSS
76 AVREF
77 PHONE
78 E2PROM DET
79 N.C
80 N.C
81 FLIP DET
82 N.C
83 NOISE
84 S-METER
85 R-DATA
86 R-QUAL
87 IFC-OUT
88 CH-MUTE
89 CH-REQH
90 R-CLK
91 CH-REQC
92 KEY-REQ
93 CD SW1
94 CD SW2
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95 EJECT
96 CD SW4
97 CH-DATAC
98 CH-DATAH
99 CH-CLK
100 L DATAL
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I/O Description
I Destination type selection terminal 0
I Destination type selection terminal 1
I Destination type selection terminal 2
I IC2 setting terminal
I IC2 setting terminal
I Panel detaching detection input
O Guide illumination control output
I Mute request (L Ch.) from CD MECHA. MI-COM. Lo: Mute request
I Mute request (R Ch.) from CD MECHA. MI-COM. Lo: Mute request
- Positive power supply connection terminal
- Ground connection terminal
O Reset output to CD mechanism MI-COM.
O Stop request to CD mechanism MI-COM.
O
I CD down SW detection input
I/O CD mechanism loading/Eject switching output
O CD mechanism loading motor control output
I/O Clock line with the D/A converter for variable illumination Not used(N.C.)
O INH output to LCD driver IC
I/O Data line with the D/A converter for variable illumination Not used(N.C.)
O CE output to LCD driver IC
I/O Panel 5V control terminal
I/O ILL+B control terminal
O A/D converter reference voltage control output
- Positive power supply connection terminal
- Ground connection terminal
I A/D converter reference voltage input terminal
I PHONE detection input
I EEPROM detection input
I
I
I Panel connector removing and installing detection input Lo: Panel attached normally, Hi: Panel detached or tilted
I
I FM noise detection input
I S-meter input from F/E
I Data input from the RDS decoder IC
I Quality input from the RDS decoder IC
I F/E IFC OUT input terminal
I Mute request from changers
O Request output to changers
I Clock input from the RDS decoder IC
I Request input from changers
I Communication request from LCD driver IC
I Loading SW detection input
I 12cm disc detection SW input
I Eject key detection input
x ao
I 8cm disc detection SW input
y
I Data input from changers
. i
O Data output to changers
I/O Clock input/output with changers
I Data input from the LCD driver IC
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Lo: Initial value
Lo: Initial value
Lo: Panel attached, Hi: Panel detached
Lo: Illmination on, Hi-Z: Illumination off
Lights-on: Panel tilted
Lights-out: Panel detached
Connected to BU 5V lines.
Connected to GND lines.
Lo: Reset
Lo: Stop mode, Hi: Operation mode
Not used(N.C.)
Hi: Chucking
Hi: Eject, Lo: Loading, Hi-Z: Stop or Break
Hi: CD loading/eject action or Break, Lo: other
Lo: When momentary power down detected or
Reset
Lo: 5V on, Hi-Z: 5V off
Q Q
3 6 7 1 3
Hi: ILL+B on, Hi-Z: ILL+B off
Lo: Illmination on, Hi-Z: Illumination off
Lights-on at the panel tilted during POWER ON mode
Flashing at the panel detached during POWER ON mode
Hi: Active, Connected to AVREF terminal
Connected to BU 5V lines.
Connected to GND lines.
1V or less: TEL MUTE, 2.5V or greater: NAVI MUTE
Lo: No EEPROM, Hi: EEPROM
Not used(pull down to GND lines)
Not used(pull down to GND lines)
Not used(pull down to GND lines)
Hi: Station detected (Vth=2.5V)
Hi: Mute request
Lo: Request
Lo: Request
Lo: Loading start
Lo: 12cm disc detected
Lo: Eject key on
u163
Not used(N.C.)
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Processing Operation
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