Kenwood kdc-5090r/ry Service Manual page 7

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MICROCOMPUTER'S TERMINAL DESCRIPTION
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Pin No. Pin Name
82 R-QUAL
83 IFC-OUT
84 NC(GND)
85 NC(GND)
86 NC
87 R-CLK
88 CH-REQC
89 KEY-REQ
90 CD-SW1
91 CD-SW2
92 NC
93 BU-DET
94 CH-DATAC
95 CH-DATAH
96 CH-CLK
97 L-DATAL
98 L-DATAS
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L 13942296513
99 L-CLK
100 PAN5V
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I/O Description
I Quality input from the RDS decoder IC
I F/E IFC OUT input terminal
I
I
O
I Clock input from the RDS decoder IC
I Request input from changers
I Communication request input form LCD driver IC
I Loading detection
I 12cm disc detection terminal
O
I Momentary power down detection input
I Data input from changers
O Data output to changers
I/O Clock input/output with changers
I Data input from the LCD driver IC
I/O Data output to the LCD driver IC
Clock output to the LCD driver IC /
I/O
Panel detaching detection input(LCD Driver)
O Panel 5V control
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y
i
KDC-5090R/RY
2 9
8
Except RDS model: Not used (pull down to GND lines)
"Hi": Station detected, "Lo": Not detected
Not used (pull down to GND lines)
Not used (pull down to GND lines)
Not used (N.C.)
Except RDS model: Not used (pull down to GND lines)
"Lo": Request
"Lo": CD chucking.
When 12cm disc was detected,
the input becomes "Lo" temporarily.
Not used(N.C.)
"Hi" : When momentary power down detected or BU OFF
"Lo" : BU ON
Q Q
3 6 7 1 3 1 5
"Lo": Panel attached
"Hi": Panel attached, "Lo": Panel detached
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9 4 2 8
Processing Operation
0 5 8 2 9 9 4 2 8
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9 9
9 9
7