Kenwood KDC-5080R/RY Service Manual page 7

MICROCOMPUTER'S TERMINAL DESCRIPTION
PinNo. Pin name I/O
51 AVDD -
52 AVREF0 -
53 PHONE I
54 NC I
55 NOISE I
56 S-METER I
57 NC I
58 NC I
59 NC I
60 NC I
61 AVSS -
62 NC O
63 NC O
64 AVREF1 -
65 CH DATAC I
66 CH-DATAH O
67 CH CLK I/O
68 LCD DATAL I
69 LCD DATAS O
70 LCD CLK O
71 NC O
72 BEEP O
73 NC O
74 PNL DET1 I
75 NC O
76 LCD INH O
77 LCD CE O
78 SRT SW1 I
79 SRT SW2 I
80 NC O
81 NC O
82 NC O
83 NC O
84 NC O
85 NC O
86 NC O
87 AMP SVR O
88 AMP STBY O
89 AMP MUTE O
90 NC O
91 ILL ON O
92 P ON O
93 SMALL I
94 P ANT O
95 P CONT O
96 ACC DET I
97 BU DET I
98 AMP CONT O
99 NC O
100 VSS -
Description
A/D converter power supply connection terminal Connected to BU 5V lines.
A/D converter reference voltage input terminal
PHONE detection input
Not used
Noise detection input
S-meter input from the front end
Not used
Not used
Not used
Not used
A/D, D/A converter ground connection terminal
Not used
Not used
D/A converter reference voltage input terminal
Data input from changers
Data output to changers
Clock input/output with changers
Data input from the LCD driver IC
Data output to the LCD driver IC
Clock output to the LCD driver IC
Not used
BEEP sound output
Not used
Panel detaching detection input
Not used
INH output to the LCD driver IC
CE output to the LCD driver IC
SRT position detection input
SRT position detection input
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Power lC reset output
Power IC standby control output
Power IC mute control output
Not used
Illumination AVR ON/OFF control output
Microprocessor peripheral power supply control output "Hi": ACC ON or during CD loading or eject action.
Small lights detection input
Antenna control output
Power control output
ACC detection input
Momentary power down detection input
External amp. control output
Not used
Ground connection terminal
KDC-5080R/RY,6016R
Processing Operation
Connected to BU 5V lines.
1V or less: TEL MUTE, 2.5V or greater: NAVI MUTE
Pull down to GND.
Pull down to GND.
Pull down to GND.
Pull down to GND.
Pull down to GND.
Connected to GND.
"Hi": Panel detached.
"Lo": LCD indication OFF.
"Hi": Active
Panel : (SW1, SW2)=(Hi, Hi)
Slide : (SW1, SW2)=(Hi, Lo)
Mask : (SW1, SW2)=(Lo, Lo)
When the momentary power down, after ACC OFF is detected and
after POWER OFF, the output goes "Hi" temporarily.
"Hi": POWER ON mode
"Lo": Mute
"Hi": AVR ON
"Lo": During vehicle small lamps turn on.
"Hi": During FM/AM reception.
"Hi": POWER ON mode except ALL OFF mode.
"Hi": ACC OFF, "Lo": ACC 0N
"Hi": When momentary power down detected or BU OFF, "Lo": BU ON
Connected to GND.
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