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CKDC-MP575
5
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No.
Active
Pin Name
I/O
Application
Processing Operation
(H/L)
19
NC
-
20
L
TUN ADJ
I
For adjusting IC10
Adjustment=H, PS1-1,2=L, PS1-3=Hi-Z,
PS2-1,2=Hi-Z, TUN DATA, CLK=Hi-Z
21
TUN SD
I
Tuner search stop output
H : Station exists, L : Station does not exist
22
H
LX RST
O
Hard reset to slave unit
H : Reset, L : Normal condition
23
H
LX CON
O
Start-up request to slave unit
H : Slave unit ON, L : Slave unit OFF
24
LX REQ M
O
Communication request to slave unit
25
AUD SDA
I/O
tuner I2C data input and output
26
AUD SCL
I/O
tuner I2C clock input and output
27
H
PWIC STBY
O
Power IC standby output
Power IC ON : H, Power IC OFF : L
28
H
VOL MUTE
O
E-VOL mute output
L : Mute OFF, Hi-Z : Mute ON
29
L
PWIC MUTE
O
Power IC mute output
Power OFF : L, Standby : L, Tel mute : L
30
TUN FANC OUT
O
Tuner block (inside the
µ
-com) check
OK : L, NG : H
31
RESET2
O
Mute for reset
Output L
32
NC
-
33
VSS1
-
34
NC
-
35
L
ACC DET
I
ACC detection
ACC exists : L, ACC does not exist : H
36
L
BU DET
I
Momentary power-down detection
BU exists : L
BU does not exist (Momentary power-down) : H
37
NC
-
38
PS2-2
O
Power supply control output
Refer to “POWER IC CONTROL” on the TRUTH TABLE
39
PS2-1
O
Power supply control output
Refer to “POWER IC CONTROL” on the TRUTH TABLE
40
PS1-1
O
Power supply control output
Refer to “POWER IC CONTROL” on the TRUTH TABLE
O
Power supply control output
Refer to “POWER IC CONTROL” on the TRUTH TABLE
O
Power supply control output
Refer to “POWER IC CONTROL” on the TRUTH TABLE
-
I
CD mute request
L : Mute request
O
CD mecha u-com stop
H : mecha
µ
-com operates, L : mecha
µ
-com is stopped
I
CD detection (chucking switch)
H : Loading is finished, L : Disc does not exist
I/O
CD motor control
Refer to “CD MECHA CONTROL OPERATION”
on the TRUTH TABLE
49
CD MOTOR
O
CD motor control
Refer to “CD MECHA CONTROL OPERATION”
on the TRUTH TABLE
50
NC
-
51
L
CD MRST
O
CD mecha
µ
-com reset
H : Normal condition, L : Reset
52
CD SCL
I/O
CD mecha I2C clock output
53
CD DISC12 SW
I
12cm CD detection
54
CD LOS SW
I
CD loading detection
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