4
CKDC-395/395A/495
●
SWITCH UNIT (X16-3370-1x)
Ref. No.
Application / Function
Operation / Condition
IC3
REMOTE SENSOR
IC4
VFD DRIVER
Q21
PAN SW5V
“ON” when the base goes “H”.
COMPONENTS DESCRIPTION
●
SYSTEM
µ
-COM : IC1 on X34- (ELECTRIC UNIT)
Pin No.
Active
Pin Name
I/O
Application
Processing Operation
(H/L)
1
DC ERR
I
DC offset detection input
2
LINE MUTE
I
Phone detection
NAVI MUTE : Over 2.5V, TEL MUTE : Below 1V
3
ROTARY CW
I
Rotary encoder input
4
AVSS
-
5
TUN TYPE1
I
E-VOL setting switch
Refer to “TUN TYPE” on the TRUTH TABLE
6
TUN TYPE2
I
E-VOL setting switch
Refer to “TUN TYPE” on the TRUTH TABLE
-
I
Data input from VFD driver
O
Data output to VFD driver
O
Clock output to VFD driver
O
Reset output to VFD driver
Display OFF, Key reset, TDF panel OFF : L
Display ON, Key scan : H
O
Chip enable output to VFD driver
I
Rotary encoder input
I
TDF panel detection
TDF panel OFF : H, TDF panel ON : L
15
PWIC BEEP
O
Beep output
16~19
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
22~24
NC
-
25
AUD SDA
I/O
tuner I2C data input and output
MICROCOMPUTER’S TERMINAL DESCRIPTION
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