KMD-671R
4
MICROCOMPUTER'S DESCRIPTION
●
Terminal Description
Pin No. Pin Name
I/O
Description
Processing Operation
1
TYPE 0
I
Destination type input terminal 0
Pull up to BU 5V lines
2
TYPE 1
I
Destination type input terminal 1
Pull down to GND
3
N.C.
O
Not used
4
N.C.
O
Not used
5
N.C.
O
Not used
6
N.C.
O
Not used
7
N.C.
O
Not used
8
N.C.
O
Not used
9
VDD
-
VDD connection terminal
Connected to BU 5V lines
10
STBY
O
Power IC standby control output
“Hi”: POWER ON mode
11
SVR
O
Power IC reset terminal
When the momentary power down, after ACC OFF
is detected and after POWER OFF, the output goes
“Hi” temporarily.
12
N.C.
O
Not used
13
P-MUTE
O
Power IC mute control
“Lo”: Mute
14
ANT-CON
O
Antenna control
“Hi”: during FM/AM reception
15
IC2-SCK
O
Clock output to the E-VOL. IC
16
N.C.
O
Not used
17
P-CON
O
Power control
“Hi”: POWER ON mode except ALL OFF mode
18
ACC-DET
I
ACC detection input
“Hi”: ACC OFF, “Lo”: ACC ON
19
REMO
I
Data input from the remote control light sensor
20
P-ON
O
A.8V AVR ON/OFF control terminal
“Hi”: POWER ON mode or during MD Loading/
Eject
21
BU-DET
I
Momentary power down detection input
“Hi”: When momentary power down detected or
BU OFF, “Lo”: BU ON
22
TSET
-
Not used
Connected to GND
23
IC2-SDA
I/O Data input/output with the E-VOL. IC
24
MUTE
O
Mute control output
“Hi”: Mute ON, “Lo”: Mute OFF
25
SW5
O
SW 5V control
“Lo”: POWER ON mode or during MD Loading/
Eject
26
M-CLK
I/O Clock input/output with the MI-COM. of MD mecha.
27
M-DATA
I/O Data input/output with the MI-COM. of MD mecha.
28
IC3-SDA
I/O Data input/output with the F/E(tuner)
29
CHCON
O
Changer control
“Lo”: Standby, “Hi”: during the movement
30
IC3-SCK
O
Clock output to the F/E(tuner)
31
REQ H
O
Request output to changers
“Lo”: Request
32
ILL-ON
O
Illumination AVR ON/OFF control terminal
“Hi”: POWER ON mode
33
DSI
O
DSI output terminal
“Hi”: DSI LED ON
34
N.C.
O
Not used
35
N.C.
O
Not used
36
MD+B
O
MD servo +B ON/OFF control terminal
“Hi”: MD source is selected or during MD Loading/
Eject
37
VDD
-
VDD connection terminal
Connected to BU 5V lines
38
X2
-
Main clock resonator connection terminal
39
X1
I
Main clock resonator connection terminal
40
VSS
-
Ground connection terminal
Connected to GND
41
XT2
-
Sub clock resonator connection terminal
42
XT1
I
Sub clock resonator connection terminal
43
RESET
I
Reset input terminal
“Lo”: System reset
44
N.C.
O
Not used
45
R-CLK
I
Clock input from RDS decoder
46
REQ C
I
Request input from changers
“Hi”: Request
47
KEY-REQ
I
Key request terminal
“Lo”: Request
48
N.C.
O
Not used
49
LOS-SW
I
MD insertion detection terminal
“Lo”: MD insertion detected
System
µ
-com : UPD784216GF520
