Kenwood KDC-MP628 Service Manual page 9

MICROCOMPUTER'S TERMINAL DESCRIPTION
Truth Value Table
CD MOTOR / CD LOEJ
CD MOTOR CD LOEJ
Standby L Hi-Z
Eject H
Load H
Brake H Hi-Z
Use prohibited L
PANEL MOTOR
OPEN CLOSE
PM MOT1 L
PM MOT2 H
● PANEL MICROCOMPUTER : IC4 (X16- : SWITCH UNIT)
Pin No. Pin Name I/O
1~7 D14~D8 I/O
8 3.3VDD -
9 VSS -
10~17 D7~D0 I/O
18 FLGCP1 O
19 NC -
20 SYS REQ I
21 SC CON I
22 FL BK O
23 2.5VDD -
24 VSS -
25 NC -
26,27 KS1, KS2 I/O
28,29 TD0, TD1 -
30,31 KS3, KS4 I/O
32 TRST -
33 ROTARY CCW I
34 ROTARY CW I
35,36 TMS, TCM -
37 3.3VDD -
38 EVSS -
39 KS5 I/O
40~42 KR1, KR2, KR3 I
43 FLGCP2 O
44 PAN REQ O
H
L
L
STOP WAIT
H H L
L H L
Function
Data input/output
Data input/output
FL harmony control
Not used
System µ-com communication request
System µ-com communication/Panel operation control
Fruorescent indicator blackout control
Not used
Key scan
Not used
Key scan
Rotary A
Rotary B
Not used
Key scan
Key return
Fruorescent indicator harmony control
Panel communication request
KDC-MP628/MP7028/MP728
PANEL MECHA
FULL OPEN
PM OPEN H
PM CLOSE H
RDS AFS
RDS AFS M RDS AFS L
AFS LOW L
AFS MID L Hi-Z
AFS HIGH Hi-Z Hi-Z
3.3V
Connect to GND
Lighting timing (brightness harmony) is controlled
with pulse interval. GCP=FLGCP1+FLGCP2
H : Data communication
H : Panel operation
H : Fruorescent indicator turned on, L : turned off
2.5V
Connect to GND
L : Output, Hi-Z : Switching
L : Output, Hi-Z : Switching
Pull down
1-pulse/2-click, 15-pulse/360°
1-pulse/2-click, 15-pulse/360°
3.3V
Connect to GND
L : Output, Hi-Z : Switching
Lighting timing (brightness harmony) is controlled
with pulse interval. GCP=FLGCP1+FLGCP2
H : Data communication in progress
MP8029/W7031/W7031Y
FULL CLOSE OTHER
L L
L H
Condition
L No sound output with AF search
Sound output with AF search
Normal reception
Processing Operation
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