9.2 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, composite SYNC and SYNC on GREEN signals. 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 by IIC protocol and does
the correct procedure to generate the proper signals to the whole system.
24LC02 (U14) chip provide DDC1/2B with Analog Plug&Play, and the DDC data format is EDID v1.3.
See FIG1-2.
FIG1-2
9.3 ANALOG to DIGITAL CONVERSION and PROCESSING
DO NOT COPYPage 9-3
File No. SG-0079 |