WT8046N24P1 Просмотр технического описания (PDF) - Weltrend Semiconductor

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WT8046N24P1

Synchronous Signal Discriminator with Power Saving Detector and Test Pattern for Green Monitor

Weltrend Semiconductor 

WT8046

Synchronous Signal Discriminator with Power Saving

Detector and Test Pattern for Green Monitor



NOV. 10, 1995

DESCRIPTION

The WT8046 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.

The WT8046 incorporates many functional circuits, including horizontal/vertical frequency

discrimination, display mode selection, synchronous pulse polarity power saving detection, and test

pattern into this single chip IC.

WT8046 is more convenient for you to shrink the PC board size and to reduce the material and labor

cost with fewer components.

FEATURES

• 31K ( 640 x 480 ) Test pattern output.

• Accepting two separated H&V synchronous signals with positive/ negative polarity.

• Support VESA VGA (640X480, 640X400, 640X350), VESA SVGA (800X600), European

SVGA (800X600), and VESA new SVGA (800X600) .

• 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 in predefined frequency 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.

• Power supply voltage: DC 5 volts; but for those pins with open-drain structure, such like the

mode select control output and frequency discrimination control output pins, can be connected to

12 volts through pull-high resistor.

APPLICATION

• Auto size control for Multi-Sync Display Monitors



Weltrend Semiconductor, Inc.

2F., No. 24, Industry E. 9th Rd.

Science-Based Industrial Park

Hsin-Chu, Taiwan, R.O.C.

Tel: 886-35-780241

Fax: 886-35-770419

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