GENERAL DESCRIPTION

The ADV7197 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 ADV7197 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 HDTV format at 74.25 MHz or 74.1758 MHz. For any other high definition standard but SMPTE274M or SMPTE296M, the Async Timing Mode can be used to input data to the ADV7197. For all standards, external 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.

FEATURES

INPUT FORMATS

YCrCb in 2 10-Bit (4:2:2) or 3 10-Bit (4:4:4) Format

Compliant to 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 HDTV (EIA-770.3)

RGB Levels Compliant to RS-170 and RS-343A

11-Bit + Sync (DAC A)

11-Bit DACs (DAC B, C)

PROGRAMMABLE FEATURES

Internal Test Pattern Generator with Color Control

Y/C Delay (±)

Individual DAC On/Off Control

VBI Open Control

I2C Filter

2-Wire Serial MPU Interface

Single Supply 5 V/3.3 V Operation

52-Lead MQFP Package

APPLICATIONS

HDTV Display Devices

HDTV Projection Systems

Digital Video Systems

High Resolution Color Graphics

Image Processing/Instrumentation

Digital Radio Modulation/Video Signal Reconstruction