Microcomputer's Terminal Description; System Μ-Com: Ic1 On X34- (Electric Unit) - Kenwood KDC-MP632U Service Manual

KDC-MP632U
KDC-W6534U/UY/X590/X7533U
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MICROCOMPUTER'S TERMINAL DESCRIPTION

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SYSTEM µ-COM: IC1 on X34- (ELECTRIC UNIT)
Pin No. Pin Name
1 REMO
2 LX MUTE
3 AUD SDA
4 AUD SEL
5 AUD SCL
6 BYTE
7 CNVSS
8 XCIN
9 XCOUT
10 RESET
11 XOUT
12 VSS
13 XIN
14 VCC1
15 NMI
16 CN DET
17 RDS CLK
TE
L 13942296513
18 LX REQ S
19 PON AM
20 LX REQ M
21 TUN IFC OUT
22 NC
23 RDS AFS M
24 RDS QUAL
25 RDS DATA
26 PWIC BEEP
27 TUN SCL
28 TUN SDA
29 VFD DATA
30 VFD INT
31 VFD CLK
32 VFD RST
33 ROMCOR SDA
34 ROMCOR SCL
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35 PON PANEL
.
36 DSI
37,38 NC
6
I/O Application
I Remote control signal input
I Mute request from slave unit
O E-VOL data output
O E-VOL control
O E-VOL clock output
-
-
I
I
-
-
-
- 12.0MHz
-
- Not used
Panel communication detection
I
(Flip-down panel model only)
I RDS decoder clock input
I Communication request from slave unit
I/O AM power supply control
O Communication request to slave unit
I Front-end IFC-OUT input
- Not used
I/O Noise detection time constant switching
I RDS decoder QUAL input
I RDS decoder data input
O Beep output
I/O Front-end I2C clock input and output
I/O Front-end I2C data input and output
I/O VFD data input and output
I VFD INT input
O VFD clock output
O VFD driver reset
E2PROM I2C data input and output for
I/O
ROM correction
I/O E2PROM I2C clock output for ROM correction
Panel 5V control
I/O
x (Flip-down panel model only) ao u163
y
DSI/EJECT LED control
i
I/O
(Flip-down panel model only)
- Not used
2 9
8
Truth
Processing / Operation / Description
Value Table
Detects pulse width
H: Mute ON, L: Mute OFF
H: Panel detached, L: Panel attached
Q Q
3 6 7 1 3 1 5
H: Receiving AM, Hi-z: No AM
H: Station found, L: No station
L fixed
q
Refer to the truth value table
MAX400kHz
INT input
Normal: 125kHz, Low consumption mode: 62.5kHz
H: Canceling reset, L: Reset
L: Momentary power down, panel detached or 11
minutes after ACC OFF
L: ON
Hi-Z: Momentary power down, panel detached or 11
co
minutes after ACC OFF
OFF: Hi-z, Pulse drive: Panel detached
.
H: Illumination ON or panel opened (POWER ON)
L fixed
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9