Kenwood KDC-MP738U Service Manual page 15

MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name I/O
101 CE
102 NC
103 MULTI CCW
104 MULTI CW
105 ROMCOR_SCL
106 ROMCOR_SDA
107 NC (SEL_E2P)
108 PON_TRI_GREEN
108 NC
109 PON_TRI_RED
110,111 NC
112 3.3VDD
113 EVSS
114 NC
115 PON_RED,BLUE
116 PON_SW3.3V
117 NC
118~123 A21-A16
124 2.5VDD
125 VSS
126~133 A15-A8
134 3.3VDD
135 EVSS
136~142 A7-A1
143 NC
144 D15
Application
I/O Memory operation permission
O Not used
I Rotary 2 A input (For new operation)
I Rotary 2 B input (For new operation)
I/O For ROM correction
I/O For ROM correction
O Not used
O Triangle green light on switch
O Not used (In models without blackout)
O Triangle red light on switch
O Not used
O Not used
O Red and Blue key illumi light on switch
Kanji ROM, ROM correction
I/O
Rotary encoder power supply
O Not used
O Address output
O Address output
O Address output
O Not used
I/O Data input/output
KDC-MP738U/W7541U
/W7541UY/X792/X8009U
Processing / Operation / Description
L: Operate, H: Wait
Hi-Z: When starting up SW3.3
Output L fi xed
1 pulse/2 clicks
15 pulses/360°
1 pulse/2 clicks
15 pulses/360°
Input when other than writing-in (including STB)
Hi-Z: When starting up SW3.3
Input when other than writing-in (including STB)
Hi-Z: When starting up SW3.3
Output L fi xed
H: ON, L: OFF
On when blackout
Output L fi xed
H: ON, L: OFF
L fi xed
L fi xed
H: ON, L: OFF
L: ON, Hi-Z: OFF
Output L fi xed
Output L fi xed
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