Microcomputer's Terminal Description; System Μ-Com : Ic1 On X34- (Electric Unit) - Kenwood KDC-W5031Y Service Manual

MICROCOMPUTER'S TERMINAL DESCRIPTION

SYSTEM µ-COM : IC1 on X34- (ELECTRIC UNIT)
Pin No. Pin Name I/O
1 DCERR I
2 LINE MUTE I
3 ROTARY CW I
4 AVSS -
5 TUN TYPE1 I
6 TUN TYPE2 I
7 AVREF1 -
8 VFD DATAF I
9 VFD DATAS O
10 VFD CLK O
11 VFD RST O
12 VFD CE O
13 ROTARY CCW I
14 FLIP DET I
15 PWIC BEEP O
16 LX DATA S I
17 LX DATA M O
18 LX CLK I/O
19 RDS AFSL O
20 TUN ADJ I
21 TUN SD I
22 LX RST O
23 LX CON O
24 LX REQ M O
25 AUD SDA I/O
26 AUD SCL I/O
27 PWIC STBY O
28 VOL MUTE O
29 PWIC MUTE O
30 RDS AFSM -
31 RESET2 O
32 RDS DATA I
33 VSS1 -
34 RDS QUAL I
35 ACC DET I
36 BU DET I
37 PON I/O
38,39 PS2-2, PS2-1 O
Application
DC offset detection input
Phone detection
Rotary encoder input
E-VOL setting switch
E-VOL setting switch
Data input from FVD driver
Data output to FVD driver
Clock output to FVD driver
Reset output to FVD driver
Chip enable output to VFD driver
Rotary encoder input
Panel detection
Beep output
Data from slave unit
Data to slave unit
LX-BUS clock
Tuner RDS mute output
For adjusting IC10
Tuner search stop input
Hard reset to slave unit
Start-up request to slave unit
Communication request to slave unit
Tuner + volume I2C data input and output
Tuner + volume I2C clock input and output
Power IC standby output
E-VOL mute output
Power IC mute output
Mute for reset
RDS decoder data input
RDS decoder QUAL input
ACC detection
Momentary power-down detection
SW5V/SW14V control
Power supply control output
KDC-MP5029/W5031
Processing Operation
TEL MUTE : Below 1V
Refer to "TUN TYPE" on the TRUTH TABLE
Refer to "TUN TYPE" on the TRUTH TABLE
Display OFF, Key reset, Panel opened : L
Display ON, Key scan : H
Panel released : H, Panel ON : L
Refer to "RDS AFSL" on the TRUTH TABLE
Adjustment=H, PS1-1, 2=L, PS1-3=Hi-Z, PS2-1, 2=Hi-Z
TUN DATA, CLK=Hi-Z
H : Station exists, L : Station does not exist
H : Reset, L : Normal condition
H : Slave unit ON, L : Slave unit OFF
Power IC ON : H, Power IC OFF : L
L : Mute OFF, Hi-Z : Mute ON
Power OFF : L, Standby : L, Tel mute : L
Output L
ACC exists : L, ACC does not exist : H
BU exists : L, BU does not exist (Momentary power-down) : H
Power ON : L, Power OFF : Hi-Z
Refer to "POWER IC CONTROL" on the TRUTH TABLE
/W5031Y/W531Y
5