Kenwood KDC-Z828 Service Manual page 8

KDC-Z828,Z828
MICROCOMPUTER'S TERMINAL DESCRIPTION
PinNo. Pin name
83 KR3
84 KR2
85 KR1
86 PN_SC_REQ
87 AVCONT
88 PN_SC_CON
89 NC
90 SOURCE
91 BLUE
92 PN_MC_REQ
93 KS4
94 KS3
95 KS2
96 KS1
97 PN_SC_DATA
98 PN_MC_DATA
99 PN_MC_CLK
100 NC
8
I/O Description
I Key return "3"
I Key return "2"
I Key return "1"
O Send request output to Main uCOM
O A/D reference voltage control output
I Operation control input from Main uCOM
O Output open.
I SRC key input
O Blue LED control output
I Send request input from Main uCOM
O Key scan "4"
O Key scan "3" and Flash uCOM write port
O Key scan "2" and Flash uCOM write port
O Key scan "1" and Flash uCOM write port
I Data input from Main uCOM
O Data output to Main uCOM
I Clock input from Main uCOM
I Resistor connected to GND
Processing Operation
Operating: High.
Operating: High. (Interrupt input)
ON: High. OFF: Low. (Interrupt input)
LED ON:HI, LED OFF:LO