Kenwood KDCW 5544 U Service Manual

Page 6

KDC-MP442U/MP6043U
/W5544U/W5644UY/X493

MICROCOMPUTERS TERMINAL DESCRIPTION

0 SYSTEM u-COM: IC302 on X34- (ELECTRIC UNIT)

Pin No. Pin Name l/O Application Wiggins Processing / Operation / Description
1 REMO l External remote control input and panel remote
control input
2 LX REO M 0 Communication request to slave unit
3 B SYS DATA 0 Serial output to Bolero
4 B MECHA DATA | Serial input from Bolero
5 B MECHA CLK | Serial clock mput from Bolero
6 BYTE -
7 CNVSS -
8 XCIN - Sub clock 32:768kHZ
9 XCOUT - Sub clock 32:768kHz
10 RESET -
11 XOUT - Main clock12.00MHz
12 V88 -
13 XIN - Main clock 12.00MHZ
14 VCC1 -
15 NMI -
16 LX RED 8 | Communication request from slave unit
17 RDS CLK | RDS decoder clock input (Terminal for European model)
18 m | Panel connector detached/attached detection H: Panel detached, L: Panel attached
19 PON AM I/O AM power supply control AM operated: H, AM not operated: Hi-Z
2O TUN lFC OUT I Front-end IFC-OUT input H: Station found, L: No station
21 RDS AFS M 1/0 Noise detection time constant SW (Terminal for European model)
22 RDS QUAL l/O RDS decoder qualification input (Terminal for European model)
23 RDS DATA | RDS decoder data input (Terminal for European model)
24 V SYNC - Not used Output L fixed
25 NC - Not used Output L fixed
26 PWlC BEEP O Beep output 2kHz/1 kHz (Model with Bluetooth)
27 TUN SCL l/O Front-end I2C clock input/output MAX 400kHz
28 TUN SDA l/O Front-end I2C data input/output
29 VFD DATA I/O VFD data input/output
30 ROTARY CW | VOL key detection (Clockwise) Detects pulse Width .
TDF: 15-pulse/360°, 2-cllck/1-pulse
31 VFD CLK O VFD clock output 125kH2
H: Reset released, L: Reset
32 VFD RST O VFD reset Momentary power-down or panel detached
or 11 minutes after ACC OFF: L
33 BT SYS DATA 0 Data output to Bluetooth
34 BT BT DATA I Data input from Bluetooth
35,36 NC - Not used Output L fixed
37 PON D5V l/O SW-REG control H: ON, Hi-Z: OFF
38 NC - Not used Output L fixed
39 ROMCOR DET | E2PROM writing request H: Writing
40 PDN 0 Simple DSP power down H: ON, L: OFF
41 DFZ MUTE l Mute request from simple DSP L: Mute request