Microcomputer's Terminal Description - Kenwood KDC-MP408U Service Manual

MICROCOMPUTER'S TERMINAL DESCRIPTION

● SYSTEM μ-COM: IC600 on X34- (ELECTRIC UNIT)
Pin No. Pin Name I/O
1 REMO I
2 LX REQ M O
3-5 NC -
6 BYTE -
7 CNVSS -
8 XCIN -
9 XCOUT -
10 RESET -
11 XOUT -
12 VSS -
13 XIN -
14 VCC1 -
15 NMI -
16 LX REQ S I
17 RDS CLK I
18 PANEL DET I
19 PON AM I/O AM power supply control
20 TUN IFC OUT I
21 RDS AFS M I/O Noise detection time constant SW
22 RDS QUAL I/O RDS decoder QUAL input
23 RDS DATA I
24 USB SYNC O
25,26 NC -
27 TUN SCL I/O Front-end I2C clock input/output
28 TUN SDA I/O Front-end I2C data input/output
29 VFD DATA I/O VFD data input/output
30 VFD INT I
31 VFD CLK O
32 ROTARY CCW I
33 S SYS DATA O
34 S SOC DATA I
35 S SOC SCL I
36-38 NC -
39 ROMCOR DET I
39 EPM I
40 NC -
41 VFD RST O
Application
External display remote control input
Panel remote control input
Communication request to slave unit
Not used
Sub clock
Sub clock
Main clock
Main clock
Communication request from slave unit
RDS decoder clock input
Detection of panel connector detached/attached
Front-end IFC-OUT input
RDS decoder data input
Clock output for SW-REG
Not used
VFD INT input
VFD clock output
VOL key detection
Bolero serial output
Bolero serial input
Bolero serial clock input
Not used
E2PROM and Bolero writing request
EPM input when writing
Not used
VFD reset
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
Truth Value
Processing / Operation / Description
Table
Output L fi xed
32.768kHz
32.768kHz
12.00MHz
12.00MHz
H: Panel detached, L: Panel attached
AM reception: H, No AM reception: Hi-Z
H: Station found, L: No station
Output L fi xed
MAX 400kHz
125kHz
Detects Pulse
15-pulse/360°, 2-click/1-pulse
Output L fi xed
H: Writing
H: Reset cancelled, L: Reset
5