The WT8043 is a silicon monolithic circuit designed for synchronous signal processing of multi-sync display monitors capable of coping with many kinds of PC’s and workstations. It can be applied to display monitors supporting standard IBM VGA, VESA super VGA and IBM 8514/A video modes. It can also be used in other high-end display monitors supporting non-standard video modes with user-defined horizontal/vertical frequency ranges.
WT8043 incorporates many functional circuits, horizontal/vertical frequency discrimination, display mode selection, and synchronous pulse polarity detection, into a single chip. Therefore, by using WT8043, monitor makers can shrink the PC board size, reduce the material cost with fewer components, and reduce labor cost as well.

Features

· Accepting separate H&V Synchronous signals with any polarities
· Support VESA VGA (640×480, 640×400, 640×350), VESA SVGA (800×600), European SVGA (800×600), VESA new SVGA (800×600), XGA (1024×768) and 1280×1024.
· Also including NEC (24K) mode, 3 VESA New 75Hz timing modes and Apple MAC II (35k) mode.
· Capable of processing horizontal frequency from 25KHz to 80KHz
· Capable of processing vertical frequency from 50Hz to 120Hz
· Standard IBM video mode control outputs (1024×768, 640×480, 640×400, 640×350)
· Six non-standard horizontal frequency control outputs with predefined frequency range. (users can define their own horizontal frequency range)
· Fixed polarity horizontal and vertical synchronous signals output
· Power supply voltage: 5V, but mode select control output and frequency discrimination control output, these open collector outputs can be combined with pull high resistor, pull up to 12V.