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ViewSonic Corporation
Confidential - Do Not Copy
VA2012w-2_VA2012wb-2
6
2
9. Block Diagram
VGA
I/P
Mcu
NT 68F633
L
LCD PANE
L
EEPROM
24LC16
Power Boa
r
d
SCALAR NT68563HF
DVI
I/P
X'TAL
(12MHz)
SI9435
TDA7496L
STEP DOWN CONVERTER
+3.3V
C1.8V)
MCU-VDD(+3.3V)
+5V
+12V
+12V
PHONE JACK
MUTE
STANDBY
VOLUME
+5V
LCD_VDD
+3.3V
+1.8V
Key Pad
BL-ON
BL-BRIGHT
SDA
CSL
VGA-SDA
VGA-SCL
DVI-SDA
DVI-SCL
VGA-SDA
VGA-SCL
DVI-SDA
DVI-SCL
SDA
CSL
LCD-ON
RSTN
REFCLKI
MCU-VDD(+3.3V)
INVERTER HV
MCU-VDD(+3.3V)
INVERTER BOA
R
D
AC 90-264
V
+20V
ON/OFF
ADJ
LDO
LDO
LDO
LVDS