TW8833-NB1-CR

Series:	Techwell™
Packaging:	Tray
Part Status:	Obsolete
Type:	LCD Controller
Applications:	LCD TV/Monitor
Mounting Type:	Surface Mount
Package / Case:	48-VFQFN Exposed Pad
Supplier Device Package:	48-QFN (7x7)
Base Part Number:	TW8833

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Introduction

The TW8833-NB1-CR is a high performance, versatile, digital signal processor (DSP) chip designed to integrate all the analog video processing operations within a consumer video device. The TW8833-NB1-CR application field and working principle belongs to the Linear – Video Processing classification, as it enables consumer video systems such as digital cameras and camcorders to process analog video signals for recording, capturing, and playback.

Architecture

The TW8833-NB1-CR contains a dual-core ARM 1176JZ-S processor and a large internal image processor. The two cores are integrated into a single package, allowing for optimal use of the real estate on the PCB and allowing for an efficient system design. The image processor enables the capture and encoding of up to 6 simultaneous HD video streams and advanced features such as face recognition, noise reduction, and High Dynamic Range (HDR) imaging.

Design

The TW8833-NB1-CR consists of a digital signal processor core, analog video receiver, and mixed signal processor subsystems. The overall design of the chip follows the principles of digital signal processing, wherein the signal is converted to a digital form, processed, and then converted back to an analog form. The digital signal processor core executes digital signal processing algorithms and performs data formatting, encoding, and decoding. The analog video receiver subsystem receives an analog video signal and performs depth of field adjustments, Gamma adjustments, and video signal cleaning. The mixed signal processor subsystem combines the analog video signals from both the analog video receiver and from the digital signal processor core and formats it to the desired output format.

Applications

The TW8833-NB1-CR is used in several different applications including digital video cameras, camcorders, IP cameras, as well as in avionic systems. The chip is capable of performing analog video processing tasks such as interpolation and de-interlacing, as well as digital video processing tasks such as rotation, cropping, and scaling. The chip also supports a variety of image sensors and is capable of encoding H.264 and VP8 video streams.

Features

The TW8833-NB1-CR chip possesses a number of features, which include:

• Simultaneous dual-core ARM1176JZ-S processor
• Real-time, low-latency video encoding
• High resolution video processing up to 4K resolution
• Gamma, temporal and spatial filter adjustments
• Face recognition and facial tracking
• Noise reduction and HDR imaging
• Supports a variety of image sensors
• H.264 & VP8 support

Conclusion

The TW8833-NB1-CR is a powerful and versatile digital signal processor, designed specifically for the analog video processing tasks performed in consumer video systems. The chip contains a dual-core ARM 1176JZ-S processor and a large on-chip image processor and supports up to 6 simultaneous video streams. The chip is capable of performing several digital and analog video processing tasks and supports a variety of image sensors and video encoding formats. The chip is used in a wide range of applications, including digital cameras, camcorders, IP cameras, avionic systems and more.

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