Kenwood KD CMP 925 Service Manual

Page 10

KDC-MP925/W8027

MICROCOMPUTERS TERMINAL DESCRIPTION

10

Pin No. Pin Name l/O Description / Processing Operation
87 FL LATCH O Latch output to FL driver IC

88,89 NC - NC

90 REMO ON 0 Power supply control for remote control IC (H :ON, Hi-Z :OFF)

91 FL3.3V SW 0 FL3.3V control terminal (H :ON, Hi-Z :OFF)

92 FL+B SW 0 FL+B control terminal (H :ON, Hi-Z :OFF)

93 3.3V SW 0 3.3V control terminal (L :ON, Hi-Z :OFF)

94 NC - NC

95 OE O OE control for Flash ROM (L : DATA transmission, Hi-Z :Wait ready)
96 NC - NC

97 WE/WR O WRITE/READ control for Flash ROM (L :Writing, Hi-Z :Wait ready)
98 3.3V VDD AVR 3.3V

99 EVSS - GND

100 CE ROM 0 CE control tor ROM (L : DATA transmission, Hi-Z :Wait ready)

101 CE F/ROM 0 CE control tor Flash ROM (L :DATA transmission, Hi-Z :Wait ready)
102 FLASHROM CHECK 0 Writing condition check for Flash ROM (H :OK, L :NG)

103,104 NC - NC

105 GREEN LED 0 Select lor illumination (GREEN H :ON, L :OFF)

106 RED LED 0 Select tor illumination (RED H :ON, L : OFF)

107 DISP LED 0 DISP LED control (Normal H: ON, L : OFF)

108 BLACK DISP 0 Light up to DISP LED (H :ON, L : OFF)

109,1 10 NC - NC

111 SA RST 0 Reset for spectrum analyzer (H : Reset, L : Normal)

112 3.3V VDD - AVR 3.3V

1 13 EVSS - GND

1 14~1 17 NC - NC

118~123 A21 ~A16 0 Address bus

124 2.5V VDD - AVR 2.5V

125 VSS - GND

126~133 A15~A8 0 Address bus

134 3.3V VDD - AVR 3.3V

135 EVSS - GND

136~143 A7~A0 0 Address bus

144 D15 l/O External ROM data input/output terminal