EM9038 Datasheet | Sigma Designs

Analog Multiplexer and Digital-to-Analog Converter Chip Description The EM9038 enables the display of video (digital YCb Cr) or graphics (analog RGB), making it ideal for applications requiring switching between two sources of data, such as MPEG video and VGA graphics. Features include three high-speed 8-bit video DACs, a high speed YCb Cr to RGB color space converter, an analog multiplexer, three analog video output buffers, a digital output buffer for S/PDIF, a 27 MHz oscillator with integrated VCXO for fine tuning, and a fully programmable PLL. A 16-bit digital video input port supports 4:2:2 YCb Cr video at up to 80 MHz. An internal color space converter translates the YCb Cr video data to RGB before driving the three 8-bit video DACs. A high-bandwidth VGA pass-through mode allows support for high-resolution graphics modes without visible degradation. Features - CCIR 601 4:2:2 16-bit YCb Cr Input Format Support (up to 80 MHz) - YCb Cr to RGB Color Space Conversion - Integrated Triple 8-bit Video DACs with Buffers Support 16.8M Colors - High-Bandwidth Analog RGB VGA Passthrough - Internal 27 MHz Oscillator with Fine Frequency Tuning - Internal Programmable Audio Clock Generation - I2C Interface to Access Internal Registers - +5V Power Supply, 64 -pin PQFP Block Diagram SPDIF IN 24 MA BUFFER SPDIF OUT RESET# SCL SDA REFCLK (27 MHZ) XTAL0 27 MHZ VCXO XTAL1 PLL CLK (AUDIO CLOCK) I2C INTERFACE ANALOG RGB IN, HS IN, VS IN .. 16-BIT YC BCR HSYNC, VSYNC HREF VCLK MUX ANALOG RGB OUT, HS OUT, VS OUT YCBCR TRIPLE 8-BIT DAC S Sigma Designs, Inc. 355 Fairview Way - Milpitas, CA, USA 95035 - Tel: 408.262.9003 - Fax: 408.957.9740 .sigmadesigns. - sales@sigmadesigns. Copyright © 2002 by Sigma Designs, Inc. All rights reserved. Sigma Designs, REALmagic and the REALmagic logo are either registered trademarks or trademarks of Sigma Designs, Inc. in the United States and/or other countries. All other trademarks or registered...