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