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Communication Equipment LSI

MN1959041

Commercial MPEG-4 Video Codec IC for W-CDMA Mobile Visual

Terminals

s

Overview

MN1959041 is an image-processing DSP that adopts a vector pipelined architecture. It provides an extensive set of

features that allow it to implement the high-efficiency image and video encoding and decoding required for image

communication, recording, and playback. It implements encoding and decoding that conform to the H.263 and MPEG-

4 Simple@L1 video encoding standards, and decoding that conforms to the MPEG-4 Simple@L3 video encoding

standard. It includes dedicated special-purpose circuits for high-speed decoding of the MPEG-4 core profile.

s

Features

鈥?/div>

General-purpose DSP core (MP: Main Processor) that can implement complex processing flexibly

鈥?Provides an instruction set of 43 instructions, including both scalar and vector instructions.

鈥?Provides interrupt control and task management functions that issue VCE/VIF/MIF (described later) start/stop in-

structions and DMA transfer instructions.

鈥?/div>

Special-purpose arithmetic circuit (VCE: Video Codec Engine) that implements a high-speed video codec

鈥?Integer precision and half-pel precision motion detection circuit (MEF/MEH)

鈥?Discrete cosine transformation/inverse discrete cosine transformation circuits (DCT/IDCT)

鈥?Variable-length encoding and decoding circuits (VLC/VLD)

鈥?Blocking noise elimination circuit (PNR)

鈥?Shape information decoding circuit (CAD)

鈥?Pixel supplementing circuit (PADDING)

鈥?Image synthesis circuit (COMPOSITE)

鈥?/div>

Full complement of image signal input and output functions

鈥?Video interface circuit (VIF) that supports both portrait and landscape orientation LCDs

鈥?Support for CIF and QCIF 4:2:2 format video input from CMOS cameras

鈥?P in P function that displays a subscreen in the lower right of the main screen

鈥?Cursor and blue background display functions.

鈥?Mosquito noise elimination filter

鈥?/div>

Functions for picture quality adjustment and for combining video and graphics

鈥?IIC (Inter IC) interface (Conforms to Version 2.0, standard and fast mode)

鈥?Video signal format conversion function (YCbCr 4:2:2

鈫?/div>

RGB; can be stopped when not needed.)

鈥?Graphics overlay function (Either post RGB conversion or post dithering can be selected.)

鈥?Video signal adjustment functions: outline enhancement, tint, color gain, brightness, contrast, and gamma adjust-

ment

鈥?Dithering function for pseudo 24-bit color (2

脳

2 matrix)

鈥?Monochrome conversion function (Either monochrome or sepia can be specified.)

鈥?Allows moving the display area (a 176-pixel

脳

220-line area placed anywhere within a 352-pixel

脳

288-line image)

鈥?YCbCr 4:2:2 test image generation function (75% color bar, horizontal/vertical stripe, arbitrary brightness/color

difference)

鈥?Camera reset control function

鈥?/div>

Large on-chip DRAM capacity

鈥?On-chip 20 Mbit DRAM provided to reduce parts counts and achieve overall system cost reductions

Publication date: November 2002

SDM00008AEM

1

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MN1959041 Datasheet

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