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