12-Bit, SDTV/HDTV 3D Comb Filter,
Video Decoder, and Graphics Digitizer
ADV7802
Data Sheet
DDR/SDR SDRAM
INTERFACE
FEATURES
ADDRESS (14)
4 noise shaped video (NSV) 12-bit ADCs
True 12-bit high dynamic range processing
12-channel analog input mux
36-bit digital YCrCb/RGB output
12-bit deep color processing
Analog monitor output
NTSC/PAL/SECAM color standards support
NTSC/PAL 3D comb filter
3D digital noise reduction (DNR)
Advanced time-base correction (TBC) with frame
synchronization
DATA (16)
CLK
ADV7802
CONTROL (9)
ANALOG INPUT INTERFACE
12
12
12
DDR/SDR
SDRAM
INTERFACE
Y
GR RGB
YPrPb
CLAMP
CLAMP
CLAMP
ADC
ADC
ADC
ADC
Cb
Cr
STANDARD
DEFINITION
PROCESSOR
(SDP)
SCART
CVBS
S-VIDEO
CLAMP
DAC
ADC_CLK
CORE_CLK
DIGITAL INPUT
INTERFACE
HS_IN1
VS_IN1
SOG
SYNC CP
SDP
PLL
ANA
DIG
HS
XTAL
Interlaced-to-progressive conversion for 525i and 625i
Advanced VBI data slicer, including teletext, CC, and V-chip
IF compensation filter
VS
ADC, CORE, MEMORY
CLK GENERATION
FLD
DE
CORE_CLK
DDS FOR SDP LINE-LOCKED
CLK GENERATION
COMPONENT
PROCESSOR
(CP)
CP
SDP
DAC
SCART fast blank support including slow switch detect
Programmable internal antialias filters
Weak, poor time-base, and nonstandard signal support
Vertical peaking, horizontal peaking, CTI, LTI
Simultaneous interlaced and progressive parallel output for
525i/525p and 625i/625p
525p/625p component progressive scan support
720p/1080i/1080p component HDTV support
Digitizes RGB graphics with maximum pixel clock rate of
135 MHz (ADV7802BSTZ-150 model only)
24-bit digital input port supports data from DVI/HDMI Rx IC
Any-to-any, advanced 3 × 3 color space conversion matrix
Flexible output pixel interface supporting 8-/10-/12-/16-/
20-/24-/30-/36-bit SDR/DDR 4:2:2/4:4:4 data formats
Programmable interrupt request output pin
LLC
2
I C CONFIGURATION
ANALOG
DIGITAL
Figure 1. ADV7802 Block Diagram
GENERAL DESCRIPTION
The ADV78021 is a high quality, single-chip, multiformat 3D comb
filter, video decoder, and graphics digitizer. This multiformat 3D
comb filter decoder supports the conversion of PAL, NTSC, and
SECAM standards in the form of a composite or an S-video into
a digital ITU-R BT.656 format. The ADV7802 also supports the
decoding of a component RGB/YPrPb video signal into a digital
YCrCb or RGB pixel output stream.
The support for component video includes standards such as 525i,
625i, 525p, 625p, 720p, 1080i, 1080p, and many other HD and
SMPTE standards. Graphics digitization is supported by the
ADV7802; it is capable of digitizing RGB graphics signals from
VGA to SXGA rates and converting them into a digital RGB or
YCrCb pixel output stream. SCART and overlay functionality are
enabled by the ability of the ADV7802 to simultaneously process
CVBS and standard definition RGB signals.
APPLICATIONS
AV receivers
LCD HDTVs
PDP HDTVs
CRT HDTVs
HDTV STBs with PVR
DVD recorders with progressive scan input support
Projectors
The ADV7802 contains two main processing sections. The first
section is the standard definition processor (SDP), which
processes all PAL, NTSC, SECAM, and component (up to
525p/625p) signal types. The second section is the component
processor (CP), which processes YPrPb and RGB component
formats, including RGB graphics.
1
Protected by U.S. Patent Number 4,907,093 and other intellectual
property rights.
Rev. D
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. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2011 Analog Devices, Inc. All rights reserved.
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