Microcomputer's Terminal Description - Kenwood Ez700SR Service Manual

Ez700SR/Ez900HDS

MICROCOMPUTER'S TERMINAL DESCRIPTION

MAIN MICROCOMPUTER : 703030GC053A (X34 : IC101)
Pin No. Pin Name
1 PLL CLK
2 SPAN
3 PANEL-DET
4 IC2 SDA
4 IC2 SDA
4 IC2 SDA
5 IC2 SCL
5 IC2 SCL
5 IC2 SCL
6 VDD
7 VSS
8 FLIP-DET
9 BEEP
10 REMO
11,12 NC
13 L CE
14,15 NC
16 DSI
17 DIM CON
18 TEST
19 ILL CON
20,21 VOL A, VOL B
22 MOSW
23 LO/EJ
24 M STOP
25 M RST
26 MUTE
27 LOE/LIM SW
28 M-MUTE L
29 M-MUTE R
30 PANEL 5V
31 RESET
32,33 XT1,XT2
34 REGC
35,36 X2,X1
37 VSS
38 VDD
39 CLKOUT
40,41 IC2 TYPE1,IC2 TYPE0
42~44 TYPE2~TYPE0
6
Module I/O
TUNER I/O CLK output terminal to F/E
O SPAN information output terminal
EXTRA I Panel installation detection terminal
AUDIO I/O Data input/output terminal with E-VOL
CD I/O Data input/output terminal with CD mechanism
EXTRA I/O Data input/output terminal with ROM collection
AUDIO I/O CLK output terminal to E-VOL
CD I/O CLK output terminal to CD mechanism
EXTRA I/O CLK output terminal to ROM correction
-
-
to PANEL I Flip detection terminal
AUDIO O BEEP output terminal
to PANEL I Remote controller input
O Destinations other than E and E2
to PANEL O CE output terminal to LCD driver
O No variable model
EJECTKEYILL, GUIDEILL, and DSI
to PANEL I/O
control terminal
to PANEL O Dimmer control terminal
-
O ILL+B off when flipped
to PANEL I Volume key input
CD O CD mechanism MOTOR IC SW
CD mechanism LOADING and EJECT
CD I/O
switching
CD O Stop request to CD mechanism
CD O Reset output terminal to CD mechanism
AUDIO I/O Mute terminal
CD I CD DOWN SW detection terminal
CD I Mute request terminal from CD mechanism
CD I Mute request terminal from CD mechanism
Power supply I/O Panel 5V control terminal
to PANEL I
I
-
I
-
-
-
I E-VOL setting selection terminal
I Destination selection terminal
Truth
Application
Value Table
e
e
r
y
Processing Operation Description
L : K destination H : M destination or equivalent
Panel not installed : L Panel installed : H
L : Panel installed, H : Panel flippable
In FLIPDET "H", when PANEL DET is "L",
then "H"/"L"
In FLIPDET "H", when PANEL DET is "H",
then "L" (When L, lighted up)
When ILL is On : With 50mS interval "H"/
"L", When ILL is OFF : "H"
While FLIPDET is "L" : H
When looking at VOL, also look at FLIPDET.
Loading, eject, and brake : H
STOP, brake : Hi-Z, Loading : L, Eject : H
Normal : H, Reset : L
Hi-Z : Mute on, L : Mute off
H : Chucking
L : Mute request
L : Mute request
Panel installed : L, Panel not installed or
momentary power down : H
Normal : H, Reset : L
32kHz
1µ condenser is to be connected to GND.
20MHz
Third party : L