Kenwood KDC-MP628 Service Manual page 8

KDC-MP628/MP7028/MP728
MP8029/W7031/W7031Y
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name
93 OEM DISP DATA
94 OEM DISP CLK
95 OEM DISP CE
96 NC
97 P CON
98 NC
99 ANT CONT
100 ILLUMI DET
101 BU DET
102 ACC DET
103 (PWIC SVR)
104 PWIC MUTE
105 PWIC STBY
106 LX CON
107 MUTE PRE R
108 CD MUTE PRE L
109 MUTE 0
110 MUTE 1
111 MUTE 2
112 MUTE A
113 DSP MUTE
114 MUTE C
115 DSP INIT RST
116 DSP S RST
117 DSP RQ
118 DSP CS
119 NC (GTEST)
120 LINE MUTE
121 MD DET
122 PWIC DC DET
123 LX RST
124 G Y OUT
125 G X OUT
126 RDS NOISE
127 AVSS
128 TUN SMETER
8
I/O Function
I/O External display DATA
I/O External display CLK
I/O External display control request
- Not used.
O External amplifier control
- Not used.
O Power antenna control
I Dimmer illumination detection
I Momentary power down detection
I ACC power supply detection
O SVR discharge circuit
O Power IC mute
O Power IC standby control
O Start up request to slave unit
O Rch pre-out mute
O Lch pre-out mute
O E-VOL front mute
O E-VOL rear mute
O E-VOL sub mute
O E-VOL spctrum analyzer mute
I/O DSP mute
O E-VOL AFS mute
O DSP initial reset
O DSP system reset
O Request to DSP
O DSP chip select
O Not used
I Line mute detect
I For a terminal of MD receiver
I DC offset error detect
O Hard reset to slave unit
I Analog Y gravity detect
I Analog X gravity detect
I FM noise detection
-
I S-meter input
Processing Operation
External display
External display
External display
POWER ON : H, POWER OFF or STANDBY : L
TUNER ON : H
L : ON, H : OFF
BU : L, No BU or momentary power down : H
ACC ON : L, ACC OFF : H
H : 5 seconds after POWER OFF and momentary
power down, Then : L
L : When STANDBY source or momentary power
down, L : When TEL MUTE
POWER ON : H, POWER OFF : L
H : SLAVE UNIT ON, L : SLAVE UNIT OFF
L : When "MUTE PRE R" is "L" or at momentary
power down, H : Only when 2-zone
L : When "MUTE PRE L" is "L" or at momentary power
down, H : Only when 2-zone
ON : L, OFF : H
ON : L, OFF : H
ON : L, OFF : H
ON : L, OFF : H
ON : L, OFF : Hi-Z
ON : L, OFF : H
L : Reset, H : Reset release
L : Reset, H : Reset release
L : Request
L : Select
TEL MUTE : 1V or less,
NAVI MUTE : 1V or less, 2.5V or more
H : Reset, L : Normal