KDC-6020,6021/Y
5
q IC1 (ELECTRIC UNIT : X25-919X-XX/X25-9202-72)
Pin No.
Pin Name
I/O
Description
Processing Operation
1
L-DATAS
O
Data line to LCD driver
2
L-CLK
O
Clock output to LCD driver
3
PLL-DATA
I/O Data input/output terminal with F/E
4
PLL-CLK
I/O Clock output to F/E
5
AM+B
I/O AM+B control
Hi: During AM reception
6
FM+B
I/O FM+B control
Hi: During FM reception, Hi: During FM reception
if with RDS, RDBS
7
CH-CON
O
Changer control output
Lo: Standby mode, Hi: Operation mode
8
CH-RST
O
Reset output to changers
: Reset
9
EVDD
-
Positive power supply connection terminal
Connected to BU 5V lines.
10
EVSS
-
Ground connection terminal
Connected to GND lines.
11
AFS
O
Noise detection time constant switching terminal
Hi: During FM reception, Lo: During FM seek or AF search
12
BEEP
O
BEEP sound output
13
REMO
I
Data input from the remote control light sensor or
wired remote control
14
AUX SW
I/O CH/AUX inputs selector terminal
Hi: AUX inputs, Lo: CH inputs
Lo: No AUX inputs model
Hi: Rear/N-F pre-outs are selected to Front output.
15
N/F SW
O
N/F selector terminal
Lo: Rear/N-F pre-outs are selected to Rear output.
Lo: No Rear/N-F pre-outs model
16
IC2-SDA
I/O Data line with IC2,CD mechanism MI-COM.
17
IC2-SCL
I/O Clock line with IC2,CD mechanism MI-COM.
18
PRE-MUTE
I/O Pre-out mute control terminal
Lo: When momentary power down detected, when
M-MUTE input is Lo.
19
N/F-MUTE
O
N-F pre-out mute control terminal
Lo: When momentary power down detected, N-F pre-
outputs selecting or OFF, when M-MUTE inputs is Lo.
Lo: No Rear/N-F pre-outputs model
20
DIMMER-CON
O
Dimmer control output
Hi: Dimmer OFF, Pulse wave shape: Dimmer ON
21
TEST
-
Test terminal
Not used(Connected to GND lines)
22
SVR
O
Power IC SVR control output
Not used(N.C.)
23
P-MUTE
O
Power IC mute output
Lo: ALL OFF mode, POWER OFF mode, TEL MUTE on
24
P-STBY
O
Power IC STBY control output
Hi: Power IC on, ALL OFF mode, Lo: Power IC off
25
MUTE
O
Mute control output
Lo: Mute off, Open: Mute on
26
SW5V
I/O SW5V control terminal
Lo: SW5V on, Hi-Z: SW5V off
27
BU DET
I
Momentary power down detection input
Hi : When momentary power down detected or BU OFF
Lo : BU ON
28
ACC DET
I
ACC detection terminal
Hi: ACC OFF, Lo: ACC ON
29
N.C
O
Not used(N.C.)
30
DIMMER
I
Small lights detection input
Lo: During vehicle small lamps turn on.
31
N.C
O
Not used(N.C.)
32
P-CON
I/O Power control output
Hi-Z: POWER OFF mode, ALL OFF mode, Hi:
POWER ON mode
33
ANT-CON
O
Antenna control output
Hi: During TUNER mode, TI reception mode, last FM mode
34
RESET
I
Reset input terminal
Lo: System reset
35
XT1
I
Sub clock resonator connection terminal
Clock count during POWER OFF mode
36
XT2
-
Sub clock resonator connection terminal
37
REGC
-
Capacitor conection terminal for regulator inside microprocessor
38
X2
-
Main clock resonator connection terminal
Oscillation: POWER ON mode, Oscillation stop:
POWER OFF mode or momentary power down detected
39
X1
I
Main clock resonator connection terminal
40
VSS
-
Ground connection terminal
Connected to GND lines.
41
VDD
-
Positive power supply connection terminal
Connected to BU 5V lines.
42
CLKOUT
O
Internal system clock output
Not used(N.C.)
43
CD MECH +B
I/O MP3 CD mechanism power supply control output Not used(N.C.)
44
P-ON
I/O SW14V control terminal
Lo: POWER OFF mode, Hi: POWER ON mode
45
O-DATA
I/O Data line with the external display device
Lo: The model without the external display device
46
O-CLK
I/O Clock line with the external display device
Lo: The model without the external display device
MICROCOMPUTER'S TERMINAL DESCRIPTION
