Microcomputer's Terminal Description - Kenwood KCD-BT6544U/UY Service Manual

KDC-BT6544U/BT6544UY
/BT7043U/BT742U

MICROCOMPUTER'S TERMINAL DESCRIPTION

● SYSTEM μ-COM: IC302 on X34- (ELECTRIC UNIT)
Pin No. Pin Name
1 REMO
2 LX REQ M
3 B SYS DATA
4 B MECHA DATA
5 B MECHA CLK
6 BYTE
7 CNVSS
8 XCIN
9 XCOUT
10 RESET
11 XOUT
12 VSS
13 XIN
14 VCC1
15 NMI
16 LX REQ S
17 RDS CLK
18 PANEL DET
19 PON AM
20 TUN IFC OUT
21 RDS AFS M
22 RDS QUAL
23 RDS DATA
24 V SYNC
25 NC
26 PWIC BEEP
27 TUN SCL
28 TUN SDA
29 VFD DATA
30 ROTARY CW
31 VFD CLK
32 VFD RST
33 BT SYS DATA
34 BT BT DATA
35,36 NC
37 PON D5V
38 NC
39 ROMCOR DET
40 PDN
41 DFZ MUTE
6
I/O Application
External remote control input and panel remote
I
control input
O Communication request to slave unit
O Serial output to Bolero
I Serial input from Bolero
I Serial clock input from Bolero
-
-
- Sub clock 32.768kHz
- Sub clock 32.768kHz
-
- Main clock 12.00MHz
-
- Main clock 12.00MHz
-
-
I Communication request from slave unit
I RDS decoder clock input
I Panel connector detached/attached detection
I/O AM power supply control
I Front-end IFC-OUT input
I/O Noise detection time constant SW
I/O RDS decoder qualifi cation input
I RDS decoder data input
- Not used
- Not used
O Beep output
I/O Front-end I2C clock input/output
I/O Front-end I2C data input/output
I/O VFD data input/output
I VOL key detection (Clockwise)
O VFD clock output
O VFD reset
O Data output to Bluetooth
I Data input from Bluetooth
- Not used
I/O SW-REG control
- Not used
I E2PROM writing request
O Simple DSP power down
I Mute request from simple DSP
Truth Value
Processing / Operation / Description
Table
(Terminal for European model)
H: Panel detached, L: Panel attached
AM operated: H, AM not operated: Hi-Z
H: Station found, L: No station
(Terminal for European model)
(Terminal for European model)
(Terminal for European model)
Output L fi xed
Output L fi xed
2kHz/1kHz (Model with Bluetooth)
MAX 400kHz
Detects pulse width
TDF: 15-pulse/360°, 2-click/1-pulse
125kHz
H: Reset released, L: Reset
Momentary power-down or panel detached
or 11 minutes after ACC OFF: L
Output L fi xed
H: ON, Hi-Z: OFF
Output L fi xed
H: Writing
H: ON, L: OFF
L: Mute request