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ADV7195 Datasheet(PDF) 1 Page - Analog Devices |
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ADV7195 Datasheet(HTML) 1 Page - Analog Devices |
1 / 36 page REV. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a ADV7195 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2002 Multiformat Progressive Scan/HDTV Encoder with Three 11-Bit DACs and 10-Bit Data Input FUNCTIONAL BLOCK DIAGRAM CGMS MACROVISION SHARPNESS FILTER CONTROL AND ADAPTIVE FILTER CONTROL TEST PATTERN GENERATOR AND DELAY AND GAMMA CORRECTION Y0–Y9 Cr0–Cr9 Cb0–Cb9 CHROMA 4:2:2 TO 4:4:4 (SSAF) 2 INTER- POLATION TIMING GENERATOR SYNC GENERATOR I2C MPU PORT CLKIN HORIZONTAL SYNC VERTICAL SYNC BLANKING RESET ADV7195 DAC CONTROL BLOCK DAC A (Y) DAC B DAC C V REF RESET COMP 11-BIT+ SYNC DAC 11-BIT DAC 11-BIT DAC LUMA SSAF CHROMA 4:2:2 TO 4:4:4 (SSAF) FEATURES INPUT FORMATS YCrCb in 2 10-Bit (4:2:2) or 3 10-Bit (4:4:4) Format- Compliant to SMPTE-293M (525p), ITU-R.BT1358 (625p), SMPTE274M (1080i), SMPTE296M (720p) and Any Other High-Definition Standard Using Async Timing Mode RGB in 3 10 Bit (4:4:4) Format OUTPUT FORMATS YPrPb Progressive Scan (EIA-770.1, EIA-770.2) YPrPb HDTV (EIA-770.3) RGB Levels Compliant to RS-170 and RS-343A 11-Bit + Sync (DAC A) 11-Bit DACs (DAC B, DAC C) PROGRAMMABLE FEATURES Internal Test Pattern Generator with Color Control Y/C Delay ( ) Gamma Correction Individual DAC On/Off Control 54 MHz Output (2 Oversampling) Sharpness Filter with Programmable Gain/Attenuation Programmable Adaptive Filter Control Undershoot Limiter VBI Open Control I2C® Filter CGMS-A (525p) 2-Wire Serial MPU Interface Single Supply 3.3 V Operation 52-MQFP Package APPLICATIONS Progressive Scan/HDTV Display Devices MPEG at 81 MHz Progressive Scan/HDTV Projection Systems Digital Video Systems High Resolution Color Graphics Image Processing/Instrumentation Digital Radio Modulation/Video Signal Reconstruction GENERAL DESCRIPTION The ADV7195 is a triple high-speed, digital-to-analog encoder on a single monolithic chip. It consists of three high-speed video D/A converters with TTL-compatible inputs. The ADV7195 has three separate 10-bit-wide input ports that accept data in 4:4:4 10-bit YCrCb or RGB or 4:2:2 10-bit YCrCb. This data is accepted in progressive scan format at 27 MHz or HDTV format at 74.25 MHz or 74.1758 MHz. For any other high-definition standard but SMPTE293M, ITU-R BT.1358, SMPTE274M or SMPTE296M the Async Timing Mode can be used to input data to the ADV7195. For all standards, exter- nal horizontal, vertical, and blanking signals or EAV/SAV codes control the insertion of appropriate synchronization signals into the digital data stream and therefore the output signals. The ADV7195 outputs analog YPrPb progressive scan format complying to EIA-770.1, EIA-770.2; YPrPb HDTV complying to EIA-770.3; RGB complying to RS-170/RS-343A. The ADV7195 requires a single 3.3 V power supply, an optional external 1.235 V reference and a 27 MHz clock in Progressive Scan Mode or a 74.25 MHz (or 74.1758 MHz) clock in HDTV mode. In Progressive Scan Mode, a sharpness filter with programmable gain allows high-frequency enhancement on the luminance signal. Programmable Adaptive Filter Control, which may be used, allows removal of ringing on the incoming Y data. The ADV7195 supports CGMS-A data control generation. The ADV7195 is packaged in a 52-lead MQFP package. I 2C is a registered trademark of Philips Corporation. |
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