Kenwood KDC-MP538U Service Manual page 5

MICROCOMPUTER'S TERMINAL DESCRIPTION
● SYSTEM μ-COM : IC601 on X34- (ELECTRIC UNIT)
Pin No. Pin Name I/O
1 WIRED REMO I
2 RDS QUAL I
3 S SYS DATA O
3 CD SI O
4 S SOC DATA I
4 CD SO I
5 S SOC CLK I
5 CD CLK O
6 BYTE -
7 CNVSS -
8 XCIN -
9 XCOUT -
10 RESET -
11 XOUT -
12 VSS -
13 XIN -
14 VCC1 -
15 NMI I
16 RDS CLK I
17 PANEL DET I
18 SRC KEY I
19 RDS DATA I
20 CD DRIVEMUTE O
21 EJECT KEY I
22 PANRST O
23 CD PIO0 I
24 PON CD I/O CD mechanism power supply control
25 F SEL1 I/O SW-REG frequency setting (Bluetooth)
26 PWIC BEEP O
27 TUN SCL I/O Front-end I2C clock input/output
28 TUN SDA I/O Front-end I2C data input/output
29 PAN SYS DATA O
30 PAN PAN DATA I
31 PAN SYS REQ O
32 PAN PAN REQ I
33~35 NC -
36 PON ILL I/O
37 NC -
38 PON PANEL I/O
Application
Remote control signal input
RDS decoder QUAL input
Data from system μ-COM to SOC
CD mechanism serial output (MP6039)
Data from SOC to system μ-COM
CD mechanism serial input (MP6039)
Clock from SOC (SOC is the host)
Serial clock output (MP6039)
Not used
RDS clock input
Panel connector ON/OFF detection
Source key input
RDS decoder data input
CD motor driver mute output
Eject key input
Panel reset
Communication request from CD mechanism DSP
(Command interface)
Beep output
Data from system μ-COM to panel
Data from panel to system μ-COM
Communication request from system μ-COM to panel
Communication request from panel to system μ-COM
Not used
Panel LED power supply control
FL display bias power supply control
Not used
Power supply for panel μ-COM
FL display VDD supply
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
Truth Value
Processing / Operation / Description
Table
Pulse width detection
400kHz
400kHz
400kHz
f=1MHz
32768Hz
32768Hz
12MHz
12MHz
H: Panel OFF, L: Panel ON
H: OFF, L: ON
H: OFF, L: ON
H: Normal, L: Reset
H: Data requested
H: Power supply ON, Hi-Z: Power supply OFF
2kHz / 1kHz
MAX: 400kHz
MAX: 400kHz
UART MAX: 500kHz
UART MAX: 500kHz
Output L fi xed
H: POWER ON,
Hi-Z: Panel OFF or POWER OFF
Output L fi xed
H: POWER ON,
Hi-Z: Panel OFF or POWER OFF
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