Microcomputer's Terminal Description; System Μ-Com : Ic1 On X34- (Electric Unit) - Kenwood CKDC-395 Service Manual

CKDC-395/395A/495
QQ
3 7 63 1515 0
SWITCH UNIT (X16-3370-1x)
Ref. No. Application / Function
IC3 REMOTE SENSOR
IC4 VFD DRIVER
Q21 PAN SW5V

MICROCOMPUTER'S TERMINAL DESCRIPTION

SYSTEM µ-COM : IC1 on X34- (ELECTRIC UNIT)
TE
L 13942296513
Active
Pin No. Pin Name
(H/L)
1 DC ERR
2 LINE MUTE
3 ROTARY CW
4 AVSS
5 TUN TYPE1
6 TUN TYPE2
7 AVREF1
8 VFD DATAF
9 VFD DATAS
10 VFD CLK
11 L VFD RST
12 VFD CE
13 ROTARY CCW
14 L TDF DET
15 PWIC BEEP
16~19 NC
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20 L TUN ADJ
21 TUN SD
.
22~24 NC
25 AUD SDA
4
COMPONENTS DESCRIPTION
"ON" when the base goes "H".
I/O Application
I DC offset detection input
I Phone detection
I Rotary encoder input
-
I E-VOL setting switch
I E-VOL setting switch
-
I Data input from VFD driver
O Data output to VFD driver
O Clock output to VFD driver
O Reset output to VFD driver
O Chip enable output to VFD driver
I Rotary encoder input
I TDF panel detection
O Beep output
-
I For adjusting IC10
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y
I Tuner search stop output
i
-
I/O Volume + tuner I2C data input and output
2 9
8
Operation / Condition
Q Q
3 6 7 1 3 1 5
NAVI MUTE : Over 2.5V, TEL MUTE : Below 1V
Refer to "TUN TYPE" on the TRUTH TABLE
Refer to "TUN TYPE" on the TRUTH TABLE
Display OFF, Key reset, TDF panel OFF : L
Display ON, Key scan : H
TDF panel OFF : H, TDF panel ON : L
Adjustment=H, PS1-1,2=L, PS1-3=Hi-Z,
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PS2-1,2=Hi-Z, TUN DATA, CLK=Hi-Z
H : Station exists, L : Station does not exist
.
9 4 2 8
0 5 8 2 9 9 4 2 8
Processing Operation
m
9 9
9 9