The AVF 49xyA is a fully integrated Audio-Video Front-end solution specifically well suited for DVD recorder and personal video recorder (PVR) applications. It combines the functional units of both a Multistandard Sound Processor (MSP) and a Video Pixel Decoder (VPX) and it provides the audio/ video synchronization of the output signal. The AVF 49xyA comes in a PQFP128 package.

The MSP unit covers the sound processing of all analog TV standards worldwide, as well as the NICAM digital sound standards. The full TV sound processing – starting with analog sound IF signal input down to processed analog AF signal output – is performed.

The VPX unit provides the full-feature video acquisition for consumer and multimedia applications. All of the processing capability necessary to convert an analog video signal in CVBS, Y/C or YC_rC_b format into a digital component stream is integrated. Additionally, text slicing for Intercast, Teletext, and Closed Caption is provided. For improved Y/C separation, an adaptive 4H comb filter is included.

Main Features

I2C interface with different device addresses for using two AVF 49xyA in one system

Audio / video synchronization either in Master or Slave mode

PQFP128-2 package

Video Features

High-performance adaptive 4H comb filter Y/C separator with adjustable vertical peaking

Multistandard color decoding:

NTSC-M, NTSC-443

PAL-BDGHI, PAL-M, PAL-N, PAL-60

SECAM, S-VHS

Video ADCs with clamping and automatic gain control (AGC)

Seven analog inputs with integrated selector for the following sources:

4×composite video (CVBS), or

2×CVBS and 2×Y/C (S-VHS), or

2×CVBS, 1×Y/C and 1×YPrPb

Dual-window cropping and scaling

Horizontal resizing between 32 and 864 pixels/line

High-quality anti-aliasing filter

Scaling controlled peaking and coring

Digital YCrCb 4:2:2 format

ITU-R 601/656 compliant output format

Square pixel format (640/768 pixels/line)

8-bit or 16-bit synchronous output mode

13.5 MHz/16-bit and 27 MHz/8-bit output rate

VBI bypass and raw ADC data output

High-performance hardware data slicing

Multistandard data slicer

NABTS, WST

CAPTION (1×, 2×), CGMS, VPS, WSS, Antiope

Full support for

Teletext, Intercast

WebTV for Windows, EPG services

VBI and Full-field mode

Data insertion into video stream

Simultaneous acquisition of Teletext, VPS, WSS, and Caption

Audio Features

Standard selection with single I2C transmission

Automatic standard detection of terrestrial TV standards

Automatic sound selection (mono/stereo/bilingual), new registers MODUS, -STATUS

Sound IF (SIF) input

Automatic-carrier-mute function

Interrupt output programmable (indicating status change)

Main/Aux channel with volume

Automatic volume correction (AVC)

Two channel mixer

Selectable preemphasis for Aux channel

Four stereo Line inputs, two stereo Line outputs

Complete Line in/out switching matrix

Two 48-kHz I2S inputs; one asynchronous 5 ... 50-kHz I2S input, one asynchronous I2S output

All analog Mono sound carriers including AM-SECAM

All analog FM-Stereo A2 and satellite standards

All NICAM standards

Simultaneous demodulation of (very) high-deviation FM-Mono and NICAM

Demodulation of the BTSC multiplex -signal and the SAP channel

Alignment-free digital DBX noise reduction for BTSC Stereo and SAP

BTSC stereo and EIA-J separation -significantly better than spec.

SAP and stereo detection for BTSC

Korean FM-Stereo A2 standard

Alignment-free Japanese standard EIA-J

Demodulation of the FM-Radio multiplex signal