Kenwood KDC-W4031 [5/38] Microcomputer s terminal description

KDC-W4031/W4031Y/W409/W409Y

KDC-W431GY/W4531/W4531Y/WF431A

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No.

Active

Pin Name I/O Application Processing Operation

(H/L)

11 L VFD RST O Reset output to VFD driver

Display OFF, Key reset, TDF panel OFF : L

Display ON, Key scan : H

12 VFD CE O Chip enable output to VFD driver

13 ROTARY CCW I Rotary encoder input

14 L TDF DET I TDF panel detection TDF panel OFF : H, TDF panel ON : L

15 PWIC BEEP O Beep output

16 LX DATA S I Data from slave unit

17 LX DATA M O Data to slave unit

18 LX CLK I/O LX-BUS clock

19 RDS AFSL O Tuner RDS mute output Refer to “RDS AFSL” on the TRUTH TABLE

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 Volume + tuner I2C data input and output

26 AUD SCL I/O Volume + 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 RDS DATA I RDS decoder data input

33 VSS1 -

34 RDS QUAL I RDS decoder QUAL input

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