5
KDC-W237AY/W237GY/W3037AY/W3037GY/
W311AY/W311GY/W3537AY/W3537GY/W4037Y
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC6
D3.3V REG.
Power supply for digital 3.3V.
IC7
A3.3V REG.
Power supply for audio 3.3V.
IC11
BU1.5V REG.
Power supply for back-up 1.5V.
Q1
APC (Auto Power Control)
Drives LD (Laser Diode).
Q10~12
5V–3.3V Level Shift
Converts signal from 5V to 3.3V, or from 3.3V to 5V.
Q13
Inverter
Inverts ZDET signal.
D1
Level Down
Lowers signal level by about 1.2V so that Lo level signal that turns the regulator ON/OFF
surely becomes Lo judgment level of the regulator SW.
D2
Laser Diode Protection
Prevents reverse bias which is applied to laser. Laser destruction prevention.
D3,4
Static Electricity Countermeasure
Prevents malfunction by static electricity.
●
SYSTEM
µ
-COM: IC1 on X34- (ELECTRIC UNIT)
Pin No.
Pin Name
I/O
Application
Truth Value
Processing Operation Description
Table
1
LX DATA M
I/O
Data to slave unit
Pull-down (GND)
2
LX CLK
I/O
LX-BUS clock
125k~65kHz
3~5
NC
-
Not used
Output Lo fixed
6
REMO
I
Remote control signal input
Detects pulse width
7
NC
-
Not used
Output L fixed
8
BYTE
I
Memory extended bus width setting
Connects to VSS
9
CNVSS
-
Connects to VSS
10
XCIN
-
32.768kHz
11
XCOUT
-
32.768kHz
12
RESET
-
L: Reset
13
XOUT
-
10.0MHz
14
VSS
-
15
XIN
-
10.0MHz
16
VCC1
-
17
NMI
I
Connects to VSS
18
PANEL DET
I
Panel communication detection
H: Panel detached, L: Panel attached
19,20
NC
-
Not used
Output L fixed
21
ROMCOR DET
I
E2PROM writing request
H: Writing
22,23
NC
-
Not used
Output L fixed
MICROCOMPUTER’S TERMINAL DESCRIPTION
COMPONENTS DESCRIPTION