Digital PAL/NTSC Video Encoder with Six DACs (10 Bits), Color Control a and Enhanced Power Management ADV7172/ADV7173 Color Signal Control/Burst Signal Control FEATURES 1 Interlaced/Noninterlaced Operation ITU-R BT601/656 YCrCb to PAL/NTSC Video Encoder Complete On-Chip Video Timing Generator Six High Quality 10-Bit Video DACs Programmable Multimode Master/Slave Operation SSAF (Super Sub-Alias Filter) 2 Macrovision Antitaping Rev 7.1 (ADV7172 Only) Advanced Power Management Features Closed Captioning Support PC98-Compliant (TV Detect with Polling and Auto Teletext Insertion Port (PAL-WST) Shutdown to Save On Power Consumption) On-Board Color Bar Generation Low Power DAC Mode On-Board Voltage Reference Individual DAC ON/OFF Control 2 2 2-Wire Serial MPU Interface (I C -Compatible and Fast I C) Variable DAC Output Current (5 mA36 mA) Single Supply 5 V or 3.3 V Operation Ultralow Sleep Mode Current Small 48-Lead LQFP Package Hue, Brightness, Contrast and Saturation Controls CGMS (Copy Generation Management System) APPLICATIONS WSS (Wide Screen Signalling) High Performance DVD Playback Systems, Portable NTSC-M, PAL-M/N, PAL-B/D/G/H/I, PAL-60 Video Equipment including Digital Still Cameras and YUV Betacam, MII and SMPTE/EBU N10 Output Levels Laptop PCs, Video Games, PC Video/Multimedia and Single 27 MHz Clock Required ( 2 Oversampling) Digital Satellite/Cable Systems (Set-Top Boxes/IRD) 80 dB Video SNR 32-Bit Direct Digital Synthesizer for Color Subcarrier GENERAL DESCRIPTION Multistandard Video Output Support: The ADV7172/ADV7173 is an integrated Digital Video Composite (CVBS) Encoder that converts digital CCIR-601 4:2:2 8-bit component Component S-Video (Y/C) video data into a standard analog baseband television signal Component YUV compatible with worldwide standards. EuroSCART RGB There are six DACs available on the ADV7172/ADV7173. In Component YUV + CHROMA + LUMA + CVBS addition to the Composite output signal there is the facility to EuroSCART Output RGB + CHROMA + LUMA + CVBS output S-VHS Y/C Video, RGB Video and YUV Video. Programmable Clamping Output Signal Advanced Programmable Power-On Reset Sequencing The on-board SSAF (Super Sub-Alias Filter), with extended Video Input Data Port Supports: luminance frequency response and sharp stopband attenuation, CCIR-656 4:2:2 8-Bit Parallel Input Format enables studio quality video playback on modern TVs, giving SMPTE 170M NTSC-Compatible Composite Video optimal horizontal line resolution. An additional sharpness control ITU-R BT.470 PAL-Compatible Composite Video feature allows extra luminance boost on the frequency response. Luma Sharpness Control An advanced power management circuit enables optimal control Programmable Luma Filters (Low-Pass PAL/NTSC , of power consumption in both normal operating modes and Notch PAL/NTSC , Extended SSAF , CIF and QCIF) power down or sleep modes. A PC98-Compliant autodetect Programmable Chroma Filters (Low-Pass 0.65 MHz, feature has been added to allow the user to determine whether 1.0 MHz, 1.2 MHz and 2.0 MHz , CIF and QCIF) or not the DACs are correctly terminated. If not, the ADV7172/ Programmable VBI (Vertical Blanking Interval) ADV7173 flags that they are not connected through the Status Programmable Subcarrier Frequency and Phase bit and provides the option of automatically powering them Programmable LUMA Delay down, thereby reducing power consumption. CCIR and Square Pixel Operation The ADV7172/ADV7173 also supports both PAL and NTSC Integrated Subcarrier Locking to External Video Source square pixel operation. The parts also incorporate WSS and CGMS-A data control generation. NOTES 1 ITU-R and CCIR are used interchangeably in this document (ITU-R has replaced CCIR recommendations). 2 The Macrovision anticopy process is licensed for noncommercial home use only, which is its sole intended use in the device. Please contact sales office for latest Macrovision version available. SSAF is a trademark of Analog Devices, Inc. 2 I C is a registered trademark of Philips Corporation. REV. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. use, nor for any infringements of patents or other rights of third parties Tel: 781/329-4700 www.analog.com which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781/326-8703 Analog Devices, Inc., 2001ADV7172/ADV7173 FUNCTIONAL BLOCK DIAGRAM CLOCK PAL NTSC CSO HSO VSO CLAMP SCLOCK SDATA ALSB HSYNC M 10 10 U 10-BIT FIELD/ 2 YUV TO I C MPU PORT VIDEO TIMING DAC A L DAC VSYNC RBG GENERATOR T MATRIX BLANK 10 I 10 + 10-BIT DAC B P YUV DAC RESET L LEVEL 10 E 10 CONTROL 10-BIT TTX X DAC C TELETEXT BLOCK DAC E TTXREQ INSERTION BLOCK R V BRIGHTNESS AND LUMA AA V DAC REF CONTRAST CONTROL PROGRAMMABLE 10 CONTROL R SET2 + FILTER M BLOCK ADD SYNC + COMP2 8 Y U 8 + SHARPNESS L 10 INTERPOLATOR FILTER 10-BIT T P0 YCrCb DAC E 4:2:2 TO DAC 10 I 8 TO U 4:4:4 COLOR P 10 SATURATION CONTROL YUV INTER- 10 DATA MODULATOR L 10-BIT 8 + PROGRAMMABLE 10 MATRIX POLATOR DAC F + E DAC ADD BURST CHROMA 10 P7 HUE X 8 V 8 + FILTER CONTROL 10 10 E 10-BIT INTERPOLATOR DAC D R DAC 10 10 DAC REAL-TIME SIN/COS CONTROL ADV7172/ADV7173 CONTROL CIRCUIT R DDS BLOCK SET1 BLOCK COMP1 GND SCRESET/RTC The ADV7172/ADV7173 is designed with four color controls input data from 1 to 254 on both Y, Cb, and Cr. The ADV7172/ (hue, contrast, brightness and saturation). All YUV formats ADV7173 supports PAL (B, D, G, H, I, N, M) and NTSC (SMPTE/EBU N10, MII and Betacam) are supported in both (with and without pedestal) standards. The Y data is then PAL and NTSC. manipulated by being scaled for contrast control and a setup level is added for brightness control. The Cr, Cb data is also The output video frames are synchronized with the incoming data scaled and saturation control is added. The appropriate Sync, Timing Reference Codes. Optionally the encoder accepts (and can Blank and Burst levels are then added to the YCrCb data. Mac- generate) HSYNC, VSYNC, and FIELD timing signals. These rovision AntiTaping (ADV7172 only), Closed-Captioning and timing signals can be adjusted to change pulsewidth and position Teletext levels are also added to Y, and the resultant data is while the part is in the master mode. The Encoder requires a interpolated to a rate of 27 MHz. The interpolated data is fil- single two times pixel rate (27 MHz) clock for standard opera- tered and scaled by three digital FIR Filters. tion. Alternatively the Encoder requires a 24.5454 MHz clock for NTSC or 29.5 MHz clock for PAL square pixel mode The U and V Signals are modulated by the appropriate sub- operation. All internal timing is generated on-chip. carrier sine/cosine phases and a phase offset may be added onto the color subcarrier during active video to allow hue adjustment. HSO/CSO and VSO TTL outputs, synchronous to the analog The resulting U and V signals are then added together to make output video, are also available. A programmable CLAMP out- up the chrominance signal. The luma (Y) signal can be delayed put signal is also available to enable clamping in either the front 13 luma cycles (each cycle is 74 ns) with respect to the chroma or back porch of the video signal. signal. The luma and chroma signals are then added together to A separate teletext port enables the user to directly input teletext make up the composite video signal. All edges are slew rate limited. data during the vertical blanking interval. The YCrCb data is also used to generate RGB data with appro- The ADV7172/ADV7173 modes are set up over a 2-wire serial priate Sync and Blank levels. 2 bidirectional port (I C-Compatible) with two slave addresses. There are six DACs on the ADV7172/ADV7173. Three of these Functionally the ADV7173 and ADV7172 are the same with the DACs are capable of providing 34.66 mA of current. The other exception that the ADV7172 can output the Macrovision anti- three DACs provide 8.66 mA each. copy algorithm. The six l0-bit DACs can be used to output: The ADV7172/ADV7173 is packaged in a 48-lead LQFP pack- age (1.4 mm thickness). 1. Composite Video + RGB Video + LUMA + CHROMA. 2. Composite Video + YUV Video + LUMA + CHROMA. DATA PATH DESCRIPTION Alternatively, each DAC can be individually powered off if not For PAL B, D, G, H, I, M, N, and NTSC M, N modes, YCrCb required. A complete description of DAC output configurations 4:2:2 Data is input via the CCIR-656-Compatible Pixel Port at a is given in Appendix 8. 27 MHz Data Rate. The Pixel Data is demultiplexed to form Video output levels are illustrated in Appendix 6. three data paths. Y typically has a range of 16 to 235, Cr, and Cb typically have a range of 128 112 however, it is possible to 2 REV. B