SAA6752HSSLASHV103 datasheet(3/71 Pages) PHILIPS

3 / 71 page

2004 Jan 26

Philips Semiconductors

Product speciﬁcation

MPEG-2 video and MPEG-audio/AC-3

audio encoder with multiplexer

SAA6752HS

FEATURES

1.1

Video input and preprocessing

• Digital YUV input according to “ITU-R BT.656” (8 bits at

27 MHz) and

“ITU-R BT.601”

• Support of enhanced “ITU-R BT.656” input format

containing decoded VBI data readable via I2C-bus;

Closed Caption (CC), Wide Screen Signalling (WSS)

and copyright information with Copy Generation

Management System (CGMS)

• Processing of non-broadcast video signals from analog

VCR according to IEC 756

• Two video clock input pins for switching two digital video

sources

• “ITU-R BT.601” format conversion to 1/2D1, 2/3D1 and

Standard Interchange Format (SIF)

• 4:2:2to4:2:0 colour format conversion

• Decimation filtering for all format conversions

• Adaptive median filter and motion compensated filter for

input noise reduction.

1.2

Video compression

• Real-time MPEG-2 encoding compliant to Main Profile

at Main Level (MP@ML) for 625 and 525 interlaced line

systems

• Supported resolutions: D1, 2/3D1, 1/2D1 and SIF

• IPB frame, IP frame and I frame only encoding

supported at all modes

• Supported bit rates: up to 25 Mbit/s I-only encoding;

up to 15 Mbit/s IP-only or IBP encoding.

• Variable video bit rate mode for constant picture quality

and constant bit rate mode to gain optimum picture

quality from a fixed channel transfer rate

• Access to bit rate control parameters whilst encoding to

support external real-time control algorithms (e.g.

constrained variable bit rate control)

• Programmable Group Of Pictures (GOP) structure

• Innovative motion estimation with wide search range

• Adaptive quantization

• Motion compensated noise filter.

1.3

Audio input

• Audio inputs: I2S format or EIAJ format (16, 18 or

20 bits), master or slave mode at 32, 44.1 and 48 kHz

• Two digital I2S input ports for selection between two

digital audio sources

• Audio clock generation: 256fs or 384fs (where

fs = 48 kHz) locked to video frame rate (if video is

present and locking is enabled)

• Sample rate conversion to 48 kHz (locked to video

frame rate if enabled) for slave mode operation in all

modes except Digital Versatile Disc (DVD) compliant

bypass.

1.4

Audio compression

• Dolby®(1) Digital Consumer Encoding (DDCE) also

known as AC-3(2) 2 channel audio encoding at

256 kbit/s or 384 kbit/s (only for SAA6752HS/V103)

• MPEG-1 layer 2 audio encoding at 256 kbit/s or

384 kbit/s

• Input data bypass for Linear Pulse Code Modulation

(LPCM) and compressed audio data [MPEG-1,

MPEG-2, Dolby® Digital (DD) and Digital Theatre

System (DTS)] according to IEC 61937

• Preamble Pc, Preamble Pd and bit stream information

captured for identification of modes during bypass of

compressed audio data for MPEG-1, MPEG-2, DD and

DTS according to IEC 61937

• Audio mute via I2C-bus control for all modes except

DVD-compliant bypass.

(1) Dolby is a registered trademark of Dolby Laboratories

Licensing Corporation.

(2) AC-3 is a registered trademark of Dolby Laboratories

Licensing Corporation.

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