Kenwood KDC-W8534 Service Manual page 11

MICROCOMPUTER'S TERMINAL DESCRIPTION
PANEL MICROCOMPUTER : 703134GJ013-A (X16 : IC4)
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 I
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
45 SYS DATA I
46 PAN DATA O
47 FL CLK O
48 KR4 INT I
49 FL DATA1 O
50 CLK IN3 I
51 FL EL O
52 FL DATA2 O
53 CLK IN2 I
54 FL LAT O
55 FL DATA3 O
56 3.3VDD -
57,58 X2,X1 I
59 CVSS -
60 CKSEL -
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
Data reception from system µ-com
Data transmission from panel
Fruorescent indicator serial communication reference clock
Key return
Fruorescent indicator serial control data
Serial synchronization clock
Fruorescent indicator skip shift control
Fruorescent indicator serial control data
Serial synchronization clock
Fruorescent indicator latch control
Fruorescent indicator serial control data
Clock
KDC-W8534/W8534Y
KDC-X790
Processing Operation
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
UART communication 500kbps
UART communication 500kbps
Reference clock 4.125MHz
Interruption possible
Synchronized to Fruorescent indicator CLK
H or Hi-Z : Odd number skip, L : Even number skip
Synchronized to Fruorescent indicator CLK
3.3V
6.6MHz
Connect to GND
Connect to GND
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