Microcomputer's Terminal Description - Kenwood KDC-BT7539U Service Manual

KDC-BT7539U/BT8041U
/BT8141UY/BT838U

MICROCOMPUTER'S TERMINAL DESCRIPTION

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