ADV7403BSTZ-110 View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADV7403BSTZ-110

12-Bit, Integrated, Multiformat SDTV/HDTV Video Decoder and RGB Graphics Digitizer

Analog Devices 

ADV7403

FUNCTIONAL OVERVIEW

The following overview provides a brief description of the

functionality of the ADV7403. More details are available in the

Theory of Operation section.

ANALOG FRONT END

The analog front end of the ADV7403 provides four 140 MHz

(ADV7403KSTZ-140), NSV, 12-bit ADCs to enable 10-bit video

decoding, a multiplexer with 12 analog input channels to enable

multisource connection without the requirement of an external

multiplexer, and four current and voltage clamp control loops to

ensure that dc offsets are removed from the video signal.

SCART functionality and standard definition RGB overlay with

CVBS are controlled by the fast blank input. This front end also

features four antialias filters to remove out-of-band noise on

standard definition input video signals.

STANDARD DEFINITION PROCESSOR (SDP) PIXEL

DATA OUTPUT MODES

The ADV7403 features the following SDP output modes:

• 8-/10-bit ITU-R BT.656 4:2:2 YCrCb with embedded time

codes and/or HS, VS, and FIELD

• 16-/20-bit YCrCb with embedded time codes and/or HS,

VS, and FIELD

• 24-/30-bit YCrCb with embedded time codes and/or HS,

VS, and FIELD

COMPONENT PROCESSOR (CP) PIXEL DATA

OUTPUT MODES

The ADV7403 features two single data rate (SDR) outputs:

16-/20-bit 4:2:2 YCrCb for all standards, and 24-/30-bit 4:4:4

YCrCb/RGB for all standards. The ADV7403 also features two

double data rate (DDR) outputs: 8-/10-bit 4:2:2 YCrCb for all

standards, and 12-bit 4:4:4 YCrCb/RGB for all standards.

COMPOSITE AND S-VIDEO PROCESSING

The ADV7403 supports NTSC (J, M, 4.43), PAL (B, D, I, G, H,

M, N, Nc, 60), and SECAM (B, D, G, K, L) standards for CVBS

and S-Video formats. Superadaptive 2D, 5-line comb filters for

NTSC and PAL provide superior chrominance and luminance

separation for composite video.

The composite and S-Video processing functionalities also

include fully automatic detection of switching among worldwide

standards (PAL/NTSC/SECAM); automatic gain control (AGC)

with white peak mode to ensure that the video is processed

without compromising the video processing range; adaptive

digital line length tracking (ADLLT™); and proprietary architecture

for locking to weak, noisy, and unstable sources from VCRs and

tuners. The IF filter block compensates for high frequency luma

attenuation due to the tuner SAW filter.

Data Sheet

The ADV7403 also features chroma transient improvement

(CTI) and luminance digital noise reduction (DNR), as well as

teletext, closed captioning (CC), extended data service (EDS),

and wide-screen signaling (WSS). It offers certified Macrovision®

copy protection detection on composite and S-Video for all

worldwide formats (PAL/NTSC/SECAM), and a copy

generation management system (CGMS). Other features

include 4× oversampling (54 MHz) for CVBS, S-Video, and

YUV modes; line-locked clock output (LLC); vertical interval

time codes (VITC); support for letterbox detection; a free-run

output mode for stable timing when no video input is present;

clocking from a single 28.63636 MHz crystal; Gemstar™ 1×/2×

electronic program guide compatible; and subcarrier frequency

lock (SFL) output for downstream video encoders.

In addition, the device has color controls for hue, brightness,

saturation, and contrast and controls for Cr and Cb offsets. The

ADV7403 also incorporates a vertical blanking interval data

processor and a video programming system (VPS) on the device.

The differential gain of the ADV7403 is 0.4% typical, and the

differential phase is 0.4° typical.

COMPONENT VIDEO PROCESSING

The ADV7403 supports 525i, 625i, 525p, 625p, 720p, 1080i,

1080p, and many other HDTV formats. It provides automatic

adjustments for gain (contrast) and offset (brightness), as well

as manual adjustment controls. Furthermore, the ADV7403 not

only supports analog component YPrPb/RGB video formats

with embedded synchronization or with separate HS, VS, and CS,

but also supports YCrCb-to-RGB and RGB-to-YCrCb conversions

by any-to-any, 3 × 3 color-space conversion matrices.

Standard identification (STDI) enables detection of the component

format at the system level, and a synchronization source polarity

detector (SSPD) determines the source and polarity of the

synchronization signals that accompany the input video.

Certified Macrovision copy protection detection is available on

component formats (525i, 625i, 525p, and 625p).

When no video input is present, free-run output mode provides

stable timing.

The ADV7403 also supports arbitrary pixel sampling for

nonstandard video sources.

Rev. B | Page 12 of 20

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