Kenwood KDC-X679 Service Manual page 10

KDC-X679
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name
44 CE
45~49 NC
50 PON_DC_DC
51 BLUE_LED
52 NC
53 PON
54 FL_VDD_ON
55~59 NC
60 VCC2
61 NC
62 VSS
63~72 NC
73 ATT_KEY
74 VOL_A
75 VOL_B
76,77 NC
78 RED_LED
79 GREEN_LED
80 TRIANGLE_LED
81,82 NC
83 KS3
84 KS2
85 KS1
86 KS0
87 KR3
88 KR2
89 KR1
90 KR0
91 NC
92 LEVEL_METER
93 NC
94 AVSS
95 VREF_CONT
96 VREF
97 AVCC
98~100 NC
10
Module I/O
Used when rewriting µcom
I
O Not used
Power supply I/O DC/DC control terminal
Power supply I/O ILL BLUE ON/OFF
O Not used
Power supply I/O Power supply control terminal
Power supply O FL3.3V Power supply control request
O Not used
µcom
- Positive power supply terminal
O Not used
µcom
- GND terminal
O Not used
KEY I ATT key input
KEY I VOL key input
KEY I VOL key input
O Not used
Power supply I/O ILL RED ON/OFF
Power supply I/O ILL_GREEN ON/OFF
Power supply O ILL TRIANGLE ON/OFF
O Not used
KEY I/O Key scan output 3
KEY I/O Key scan output 2
KEY I/O Key scan output 1
KEY I/O Key scan output 0
KEY I Key return input 3
KEY I Key return input 2
KEY I Key return input 1
KEY I Key return input 0
O Not used
EXTRA I LEVEL_METER input terminal
O Not used
µcom
- GND terminal
µcom
O VREF control terminal
µcom
I Analog reference voltage
µcom
- Positive power supply terminal
O Not used
Application Processing Operation Description
Output : L
H : FL+B ON, Hi-Z : FL+B OFF
Hi-Z : Light OFF, L : Light ON
Output : L
L : ON, Hi-Z : OFF
H : ON
Output : L
Output : L
Output : L
H : OFF, L : ON
Pulse width DET
Pulse width DET
Output : L
Hi-Z : Light OFF, L : Light ON
Hi-Z : Light OFF, L : Light ON
L : Light OFF, H : Light ON
Output : L
Output Low, Hi-Z switching
Output Low, Hi-Z switching
Output Low, Hi-Z switching
Output Low, Hi-Z switching
Output : L
Output : L
H : ON
Output : L