BT261 datasheet(44/56 Pages) ETC

Part #	BT261

Description	30 MHz Pixel Clock Monolithic CMOS HSYNC Line Lock Controller

PDF	56 Pages

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Manufacturer	ETC [List of Unclassifed Manufacturers]

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Bt261

30MHz Pixel Clock Monolithic CMOS HSYNC Line Lock Controller

Brooktree®

APPLICATION INFORMATION

Interfacing to the Bt252

L261_H

Interfacing to the Bt252

Figure 12 illustrates the interface of the Bt261 to the Bt252 Image Digitizer. The

VIDEO input of the Bt261 connects directly to the CSYNC* output of the Bt252.

As CSYNC* is a TTL-compatible output, the highest sync slicing level should be

selected on the Bt261.

The Bt261 provides the ZERO and CLAMP signals required by the Bt252, in

addition to the CLOCK.

The HSYNC, VSYNC*, FIELD, and CAPTURE signals of the Bt261 interface

to the video timing controller and video DRAM controller.

Figure 12. Interfacing to the Bt252

VIDEO

ZERO CLAMP CLOCK

CSYNC* ZERO CLAMP CLOCK

Bt252

Bt261

HSYNC

VSYNC*

FIELD

CAPTURE

To Video Timing

Controller And

DRAM Controller

BT261 Datasheet(PDF) 44 Page - List of Unclassifed Manufacturers