![Kenwood KDC-BT838U - Radio / CD Скачать руководство пользователя страница 6](http://html.mh-extra.com/html/kenwood/kdc-bt838u-radio-cd/kdc-bt838u-radio-cd_service-manual_187172006.webp)
6
KDC-BT7539U/BT8041U
/BT8141UY/BT838U
MICROCOMPUTER’S TERMINAL DESCRIPTION
●
SYSTEM
μ
-COM: 30626FHP3A7GP (X34-597: IC601)
Pin No.
Pin Name
I/O
Application
Truth
value table
Processing Operation Description
1
WIRED_REMO
I
Remote controller input
Pulse width detection
2
RDS_QUAL
I
RDS decoder QUAL input terminal
2
NC
O
Not used (Models without RDS)
Output is
fi
xed to L
3
S_SYS_DATA
O
Data from system
μ
-com to SOC
(System
μ
-com
→
SOC)
400k
3
CD_SI
O
CD mechanism serial output
4
S_SOC_DATA
I
Data from SOC to system
μ
-com
(SOC
→
System
μ
-com)
400k
4
CD_SO
I
CD mechanism serial input
5
S_SOC_CLK
I
Host is SOC, CLK from SOC
400k
5
CD_CLK
O
6E Mechanism serial clock output
f=1MHz
6
BYTE
7
CNVSS
8
XCIN
32,768Hz
9
XCOUT
32,768Hz
10
RESET
11
XOUT
12MHz
12
VSS
13
XIN
12MHz
14
VCC1
15
NMI
I
Not used
16
RDS_CLK
I
RDS clock input terminal
RDS clock input terminal
16
NC
O
Not used (Models without RDS)
Output is
fi
xed to L
17
PANEL_DET
I
Panel connector attach/detach detection
terminal
H: Panel detach, L: Panel attach
18
SRC_KEY
I
Source key input
H: OFF, L: ON
19
RDS_DATA
I
RDS decoder DATA input terminal
19
NC
O
Not used (Models without RDS)
Output is
fi
xed to L
20
CD_DRIVEMUTE O
CD motor driver mute output
20
NC
O
Not used (Models with USB)
Output is
fi
xed to L
21
EJECT_KEY
I
Eject key input
H: OFF, L: ON
22
PANRST
O
Panel reset terminal
H: Normal, L: Reset
23
CD_PIO0
I
Command I/F
Communication request terminal from
mechanism DSP
H: Data request
23
NC
O
Not used (Models with USB)
Output is
fi
xed to L
24
PON_CD
I/O CD mechanism power supply control
H: CD mechanism power supply ON
Hi-Z: Power supply OFF
24
NC
O
Not used (Models with USB)
Output is
fi
xed to L
25
F_SEL1
I/O
SW_REG frequency setup terminal 1
(Models with BT)
H: When receiving MW
Hi-Z: When receiving other frequency than MW
25
NC
O
Not used (Models without BT)
Output is
fi
xed to L
26
PWIC_BEEP
O
Beep output
2kHz 1kHz
27
TUN_SCL
I/O F/E I2C clock I/O terminal
MAX 400k
28
TUN_SDA
I/O F/E I2C data I/O terminal
MAX 400k
29
PAN_SYS_DATA
O
Data from system
μ
-com to panel
(System
μ
-com
→
Panel)
UART MAX 500k