
Weltrend Semiconductor
DESCRIPTION
The WT8045 is a silicon monolithic circuit designed for synchronous signal processing and power
saving detection of multi-sync display monitors, which can cope 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.
FEATURES
· Accepting two separated H&V synchronous signals with positive/ negative polarity.
· Support VESA VGA (640X480, 640X400, 640X350), VESA SVGA (800X600), European
SVGA (800X600), VESA new SVGA (800X600), XGA (1024X768) and 1280x1024.
· Capable of processing horizontal frequency between 25KHZ to 80KHZ.
· Standard IBM video mode control outputs (1024X768, 640X480, 640X400, 640X350).
· Five non-standard horizontal frequency control outputs inpredefinedfrequency range.
· Power saving mode - It can detect the conditions of monitor to decide which one will be selected as following: ON/STANDBY/SUSPEND/OFF mode.
· Fixed polarity outputs on both horizontal and vertical synchronous signals.