GENERAL DESCRIPTION

The ADV7177/ADV7178 is an integrated digital video encoder that converts Digital CCIR-601 4:2:2 8- or 16-bit component video data into a standard analog baseband television signal compatible with worldwide standards. The 4:2:2 YUV video data is interpolated to two times the pixel rate. The color difference components (UV) are quadrature modulated using a subcarrier frequency generated by an on-chip 32-bit digital synthesizer (also running at two times the pixel rate).

FEATURES

  ITU-R BT601/656 YCrCb to PAL/NTSC Video Encoder

  High Quality 9-Bit Video DACs

  Integral Nonlinearity <1 LSB at 9 Bits

  NTSC-M, PAL-M/N, PAL-B/D/G/H/I

  Single 27 MHz Crystal/Clock Required (32 Oversampling)

  75 dB Video SNR

  32-Bit Direct Digital Synthesizer for Color Subcarrier

  Multistandard Video Output Support:

     Composite (CVBS)

     Component S-Video (Y/C)

     Component YUV and RGB

  Video Input Data Port Supports:

     CCIR-656 4:2:2 8-Bit Parallel Input Format

     4:2:2 16-Bit Parallel Input Format

  SMPTE 170M NTSC-Compatible Composite Video

  ITU-R BT.470 PAL-Compatible Composite Video

  Full Video Output Drive or Low Signal Drive Capability

     34.7 mA max into 37.5 V (Doubly-Terminated 75R)

     5 mA min with External Buffers

  Programmable Simultaneous Composite and S-VHS

  (VHS) Y/C or RGB (SCART)/YUV Video Outputs

  Programmable Luma Filters (Low-Pass/Notch/Extended)

  Programmable VBI (Vertical Blanking Interval)

  Programmable Subcarrier Frequency and Phase

  Programmable LUMA Delay

  Individual ON/OFF Control of Each DAC

  CCIR and Square Pixel Operation

  Color Signal Control/Burst Signal Control

  Interlaced/Noninterlaced Operation

  Complete On-Chip Video Timing Generator

  OSD Support (AD7177 Only)

  Programmable Multimode Master/Slave Operation

  Macrovision Antitaping Rev 7.01 (ADV7178 Only)**

  Closed Captioning Support

  Onboard Voltage Reference

  2-Wire Serial MPU Interface (I2C® Compatible)

  Single Supply +5 V or +3 V Operation

  Small 44-Lead PQFP Package

  Synchronous 27 MHz/13.5 MHz Clock O/P

APPLICATIONS

  MPEG-1 and MPEG-2 Video, DVD, Digital Satellite/Cable Systems (Set Top Boxes/IRDs), Digital TVs, CD Video/Karaoke, Video Games, PC Video/Multimedia