Kenwood KDC-W8534 Service Manual page 7

MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name I/O
14 CNVSS -
15 XCIN I
16 XCOUT I
17 RESET I
18 XOUT -
19 VSS -
20 XIN -
21 VCC1 -
22 NMI I
23 PANEL DET I
24 RDS CLK I
24 NC O
25 LX REQ S I
26 PON AM I/O
27 LX REQ M O
28 TUN IFC OUT I
29 NC O
30 RDS AFS M I/O
30 NC O
31 RDS QUAL I
31 NC O
32 RDS DATA I
32 NC O
33 PWIC BEEP O
34 TUN SCL I/O
35 TUN SDA I/O
36 SYS DATA O
37 VCC1 -
38 PAN DATA I
39 VSS -
40 SYS REQ O
41 PAN REQ I
42 SDA I/O
43 SCL I/O
44 PON PANEL I/O
45 DSI I/O
46~49 NC -
50 PM MOT1 O
51 PM MOT2 O
52 EPM I
53 PM OPEN I
54~56 NC -
Function
Clock
Clock
Reset
Clock
GND
Clock
Not used
Panel detection
RDS decoder clock
Not used
Communication request from slave unit
AM power supply control
Communication request to slave unit
Front-end IFC out
Not used
Time constant switching when noise detected
Not used
RDS decoder QUAL
Not used
RDS decoder DATA
Not used
Beep
Front-end I2C clock
Front-end I2C data
Inside-panel communication data
Inside-panel communication data
Communication request from system µ-com
Communication request from panel
I2C data input output
I2C clock input output
Panel 5V control
DSI control
Not used.
Panel motor control 1
Panel motor control 2
Flash EPM
Panel full open detection
Not used
KDC-W8534/W8534Y
KDC-X790
Processing Operation
32,768kHz
32,768kHz
12MHz
12MHz
H : No panel, L : Panel exists
L-output for models without RDS/RBDS
AM in operation : H, AM not in operation : HI-Z
H : Station exists, L : No station
Refer to Truth Value Table r
L-output for models without RDS/RBDS
L-output for models without RDS/RBDS
L-output for models without RDS/RBDS
MAX 500kbps
MAX 500kbps
ON : H (Momentary power down/Panel detached)
11 Minutes after ACC OFF : Hi-Z
Refer to Truth Value Table w
Refer to Truth Value Table w
Refer to Truth Value Table e
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