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ANALOG SIGNAL INPUT and EDID
This product uses the internal function of Mascot V (U1) as a signal detector in order to support separate SYNC.
The analog input Horizontal and Vertical Synchronal signals pass through the Schmitt trigger buffer U4 to stabilize
then input to Mascot U1 pin38 VGA_VSYNC, pin39 VGA_HSYNC or pin40 SOGI and the image processing.
Then Mascot will detect the signal type if it is separate SYNC, composite SYNC or SOG. MPU (U6) reads the
input signal type from IIC protocol and does the correct procedure to generate the proper signals to the whole
system.
24LC02 (U14) chip provide DDC1/2B
See FIG1-2.
ViewSonic Corporation
with Analog Plug&Play, and the DDC data format is EDID v1.3.
FIG1-2
10
Confidential -
-
Do Not Copy
VG150m/mb
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Troubleshooting
