SI21822-A55-GMR

Series:	*
Part Status:	Not For New Designs

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Introduction

SI21822-A55-GMR is a linear video processing chip made by Texas Instruments. It is designed to be used in low-power mobile devices. The chip features a wide range of video processing capabilities, including matrix-based video scaling, 3D noise reduction, image processing algorithms, and Dual Image Enhancement Technology (DIET). The SI21822-A55-GMR is one of the most commonly used video processing chips for mobile devices.

Application Field

The SI21822-A55-GMR is widely used in mobile phones, tablets, portable media players, and digital cameras. It is designed to enable high-quality video display on these devices, which require low power consumption. The chip supports different video input formats, such as MPEG-2, MPEG-4, H.264, H.265, and VP9. It can also scale video up to 4K quality. The chip\'s advanced image processing capabilities enable the real-time detection of optical video quality, allowing device manufacturers to optimize video outputs for different viewing scenarios.

Working Principle

The SI21822-A55-GMR is a highly integrated linear-video processor. It combines a wide range of video processing functions in a single package. The chip includes voltage regulators, an on-chip ARM Cortex-M3-based processor, and dedicated modules for video pre-processing, post-processing, and motion estimation. The chip is equipped with two digital-to-analog (D/A) converters, which convert digital video into analog signals. The on-chip ARM Cortex-M3 processor then performs digital image processing tasks, such as scaling, noise reduction, and other image-processing operations. The post-processing module then converts the analog signal back to digital format and outputs the final video frame.In addition, the chip is also capable of performing motion estimation, which allows for more accurate frame-rate control. It can detect and reduce motion blurring and make dynamic adjustments to the video output to optimize the viewing experience.

Conclusion

The SI21822-A55-GMR is a highly integrated linear-video processor that is designed to enable the high-quality video display in mobile devices. It supports a variety of video input formats and can scale video up to 4K quality. The chip is equipped with on-chip processor and dedicated modules for video pre-processing, post-processing, and motion estimation. All of these features make the SI21822-A55-GMR an ideal choice for providing high-quality video output in low-power mobile devices.

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