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BT457 - (BT457 / BT458) Monolithic CMOS 256 Color Palette RAMDAC

Description

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1-1 Pin Descriptions

Features

  • w w w The Bt457 and Bt458 are pin- and software-compatible RAMDACs designed specifically for high-performance, high-resolution color graphics. The architecture enables a display of 1280 x 1024 bit-mapped color graphics (up to 8 bits per pixel plus up to 2 bits of overlay information). This minimizes the use of costly ECL interfacing, because most of the high-speed (pixel clock) logic is contained on-chip. The multiple pixel ports and internal multiplexing enable TTL-compatible interface (up to 3.

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Datasheet Details

Part number BT457
Manufacturer Conexant Systems
File Size 639.05 KB
Description (BT457 / BT458) Monolithic CMOS 256 Color Palette RAMDAC
Datasheet download datasheet BT457 Datasheet
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Full PDF Text Transcription

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m o .c U 4 t e Bt457/Bt458 e h S MHz/165 MHz Monolithic CMOS 256 Color Palette 125 MHz/135 a RAMDAC at .D Distinguishing Features w w w The Bt457 and Bt458 are pin- and software-compatible RAMDACs designed specifically for high-performance, high-resolution color graphics. The architecture enables a display of 1280 x 1024 bit-mapped color graphics (up to 8 bits per pixel plus up to 2 bits of overlay information). This minimizes the use of costly ECL interfacing, because most of the high-speed (pixel clock) logic is contained on-chip. The multiple pixel ports and internal multiplexing enable TTL-compatible interface (up to 32 MHz) to the frame buffer, while maintaining the 165 MHz video data rates required for sophisticated color graphics.
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