digital infotainment products High Performance Video Encoder with HDTV Output CX25874/CX25875 Highest-Quality Video Encoder with “Adaptive” Flicker Filtering and HDTV Output Conexant’s CX25874 and CX25875 video encoders are specifically designed to meet TV-out cost and performance requirements for next-generation desktop and notebook PCs, game consoles and set-top boxes. With software forward compatibility to the CX25870 and CX25871, manufacturers can quickly bring to market new solutions that provide adaptive flicker filtering, ATSC High-Definition Television (HDTV) output, and true international television display (NTSC, PAL and SECAM output). The CX25874 and CX25875 support resolutions from 320 x 200 to 1024 x 768 and programmable overscan ratios from 0% to 25%. The CX25874 and CX25875 also provide 48 automatic configuration modes and offer 10-bit DACs. HDTV Output HDTV is here. More than 1 million consumers have purchased HDTV sets. With the start of this television set transition, TV-out capability must now include the ability to connect PCs, set-top boxes, DVD players and game consoles to HDTV television sets. Distinguishing Features • True international support for NTSC, PAL and SECAM output • HDTV output capability The CX25874 and CX25875 can convert either YCrCb or RGB input to HDTV output. While the CX25874 and CX25875 are in HDTV output mode, the device will provide either analog RGB or analog YPBPR signals and automatically insert tri-level synchronization pulses • Adaptive flicker filtering • Supports resolutions from 320 x 200 to 1024 x 768 (when necessary) and vertical synchronizing “broad pulses”. • Software forward compatible with the CX25870 and CX25871 The CX25874 and CX25875 are compliant with all existing HDTV • Programmable overscan ratios from 0% to 25% standards including EIA770-4, SMPTE 274M/293M/296M and support all ATSC HDTV resolutions including 480p, 720p and 1080i. • Pin compatible with CX25872 and CX25873 • 64-pin TQFP digital infotainment products High Performance Video Encoder with HDTV Output CX25874/CX25875 Adaptive Flicker Filtering Signaling (WSS) 16:9 aspect ratio. The international The CX25874 and CX25875 include Conexant’s unique standards supported include NTSC (North America, adaptive flicker-filtering capability. With this feature, the Taiwan, Japan), PAL-B, D, G, H, I (Europe, Asia), PAL-M optimal amount of flicker filtering for a given application (Brazil), PAL-N (Paraguay), PAL-Nc (Argentina), PAL-60, is automatically determined by the characteristics of the ECAM-D, K, K1 (Russia), SECAM-B, G, H (Middle East) pixel content. Now both an Excel spreadsheet and DVD and SECAM-L (France). movie can look great at the same time. Consumers do not have to manually adjust the amount of flicker Pixel Input Formats and Timing filtering as they switch from applications requiring The CX25874 and CX25875 convert a wide range significant flicker filtering (e.g., text-intensive applications of input formats to television video formats. The input like an Excel spreadsheet) to those requiring little or no resolution can be non-interlaced with an active flicker filtering (e.g., a DVD movie). resolution of 320 x 200 to 1024 x 768 or interlaced such as CCIR601, CCIR656 and VESA VIP. Conexant International Support is the only provider of video encoders that have the The CX25874 and CX25875 provide the most complete flexibility to offer any resolution in this range with support for products with TV-out functionality shipped so many input and output format options. This includes to the U.S. and international markets. The CX25874 the exact resolution to display DVD movies in either and CX25875 support SCART and Wide Screen NTSC or PAL formats. Automatic Configuration Modes CGMS Support The CX25874 and CX25875 offer enhanced automatic The CX25874 and CX25875 support the complete CGMS configuration mode functionality. A total of 48 different set of standards. This includes 480i, 480p/525p, 720p/750p modes are now available which provide pre-programmed and 1080i/1125i. register settings for more than 95% of typical TV-out settings. For example, PAL-M can be automatically Overscan Compensation configured to an input resolution of 640 x 480 RGB with The CX25874 and CX25875 support overscan ratios as a moderate amount of overscan compensation with just low as 0% (truly to the bezel of the TV) and as high as a single register write. 25% (25% of the screen will be black). Macrovision™ Support The CX25875 provides Macrovision 7.1.L1 copy protection and Macrovision 525/625p specification compliance. P[11:0] Input Demux HSYNC VSYNC BLANK FIELD Timing Color Space Conversion #1 Flicker Filter/Scaler FIFO FSADJUST COMP Internal Reference VREF SIC SID ALTADDR Serial Interface Video Encoder RESET DAC Mux SLEEP Color Space Conversion #2 10-bit DACA 10-bit DACB 10-bit DACC 10-bit DACD VBIAS to internal clocks XTALIN XTALOUT XTAL OSC PLL Clock Generation XTL_BFO CX25874/CX25875 block diagram Bias Gen CLK 0 CLK 1 features and specifications Product Features • HDTV output • CGMS support • Adaptive flicker filtering for enhanced image and text sharpness • 5-line vertical and horizontal flicker filtering • Supports any input resolution from 320 x 200 to 1024 x 768 • 48 automatic configuration modes • Programmable power management • Software-forward compatibility with the CX25870 and CX25871 • Pin compatibility with the CX25872 and CX25873 • SCART • WSS 16:9 (wide screen signaling) support • Macrovision 7.1.L1 copy protection (CX25875 only) • 525p/625p specification compliance (CX25875 only) • 10-bit DACs for superior picture quality • Overscan compensation ratios from 0 to 25% • Serial programming interface • Buffered crystal clock output • NTSC/PAL/SECAM TV outputs: – Interlaced or non-interlaced – Composite – S-video (Y/C) – Simultaneous S-video and Composite – YUV www.conexant.com © 2001, Conexant Systems, Inc. All Rights Reserved. General Information: Conexant and the Conexant logo are trademarks of Conexant Systems, Inc. Other trademarks are U.S. and Canada: (800) 854-8099 owned by their respective owners. Although Conexant International: (949) 483-6996 strives for accuracy in all its publications, this material Headquarters – Newport Beach may contain errors or omissions and is subject to change without notice. THIS MATERIAL IS PROVIDED AS IS 4311 Jamboree Rd, P.O. Box C AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, Newport Beach, CA 92660-3095 INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR Order# 101812A 01-0916 PURPOSE AND NON-INFRINGEMENT. Conexant shall not be liable for any special, indirect, incidental or consequential damages as a result of its use. • YCrCb non-interlaced input to interlaced output – 16-bit 4:2:2 multiplexed 8-bit input – 24-bit 4:4:4 multiplexed 12-bit input • RGB non-interlaced input to interlaced output – 15/16-bit multiplexed 8-bit input – 24-bit multiplexed 12-bit input • RGB non-interlaced input to RGB non-interlaced output – 15/16-bit multiplexed 8-bit input – 24-bit multiplexed 12-bit input • RGB or YCrCb interlaced input to interlaced output – CCIR656 – CCIR601/DVD – VESA VIP • 64-pin TQFP Applications • • • • • • • • • Desktop PCs Graphics cards Notebook computers Game consoles Digital television receiver cards Living room PCs Internet PCs Progressive DVD players Set-top boxes