Kenwood KDC-MP628 Service Manual page 11

MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name I/O
90~93 NC -
94 WE I/O
95 OE I/O
96,97 NC -
98 3.3VDD -
99 VSS -
100 FROMCHK -
101 CE I/O
102~104 NC -
105 ROMCOR SCL -
106 ROMCOR SDA -
107 NC (SEL E2P) -
108 PON TRI GREEN I/O
109 PON TRI RED I/O
110 PON BLUE I/O
111 SA RST O
112 3.3VDD -
113 EVSS -
114 PON GREEN I/O
115 PON RED I/O
116 PON SW3V I/O
117 NC O
118~123 A21~A16 O
124 2.5VDD -
125 VSS -
126~133 A15~A8 O
134 3.3VDD -
135 EVSS -
136~142 A7~A1 O
143 NC -
144 D15 I/O
Function
Not used
Memory data write permission
Memory data transmission permission
Not used
Not used
Memory operation permission
Not used
Not used
Not used
Not used
Triangle green light ON switch
Triangle red light ON switch
Blue sub-illumination light ON switch
Spectrum analyzer IC reset
Green key illumination light ON switch
Red illumination light ON switch
Rotary encoder power supply
Not used
Address output
Address output
Address output
Not used
Data input/output
KDC-MP628/MP7028/MP728
MP8029/W7031/W7031Y
Processing Operation
L : Write, H : Wait SW3.3V start up : Hi-Z
L : Data transmission, H : Wait SW3.3V start up : Hi-Z
3.3V
Connect to GND
L : Operation, H : Wait SW3.3V start up : Hi-Z
H : Light ON, Hi-Z : Light OFF, When blackout : Light ON
H : Light ON, Hi-Z : Light OFF
H : Light ON, Hi-Z : Light OFF
H : Reset (1.8V or higher), L : Normal
3.3V
Connect to GND
H : Light ON, Hi-Z : Light OFF
H : Light ON, Hi-Z : Light OFF
L : ON, Hi-Z : OFF
2.5V
Connect to GND
3.3V
Connect to GND
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