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Intersil Launched First Full HD LCD Video Processor

2017-07-11 17:02:39 | 日記

Intersil, a leading global provider of semiconductor solutions, today announced the availability of the industry's first full HD LCD video processor designed for automotive applications with the latest generation of automotive SoCs, the world's leading semiconductor solutions provider, Renesas Electronics Co., Ltd. (TSE: 6723) --- TW8844. The highly integrated TW8844 is built on Intersil's industry-leading automotive infotainment and display systems and is the first high-definition (HD) 1080p LCD video with analog video decoders, two scalar and MIPI-CSI2 SoC interfaces processor.

TW8844 provides the high reliability required by the car manufacturer to ensure that the rear view camera system complies with the US Federal Motor Vehicle Safety Standard (FMVSS-111) and prevents reversal accidents resulting in casualties. TW8844 can help achieve the transition from analog to digital camera systems and supports many video interfaces and up to 1920 x 1080 Full HD LCD panel resolution. The TW8844 LCD video processor is ideal for automotive center console / stereo ontologies, full-screen mirrors, combined instrument displays and double headrest rear seat entertainment systems.

Global carmakers are beginning to have rear view camera systems for new models. In accordance with the requirements of the American Children's Traffic Safety Act, the US National Highway Traffic Safety Administration enacted regulations in March 2014 requiring automakers to install "rear visibility" for vehicles weighing less than 10,000 pounds Technology. The new FMVSS-111 regulations stipulate that the driver must be able to see the rear of the vehicle when the vehicle reverses and minimize the dead zone. The law aims to reduce the number of casualties caused by reversing accidents (many of which involve children). According to the requirements of the FMVSS-111 method, all new cars sold in the United States from May 2018 must be equipped with a rear view camera, and the rear view camera video must be displayed within 2 seconds after the driver hangs up and down.

The TW8844 video processor with MIPI-CSI2 output and the TW8845 video processor with BT.656 output all exceed the FMVSS-111 method and can display live video with graphics overlaps in less than 0.5 seconds after the vehicle is ignited The TW884x provides a robust rear view camera architecture to address the inherent fast start reliability issues inherent in more complex console systems. The current car audio ontology is prone to operating system (OS) software freeze and hang, causing the display image to freeze, or to prevent the rear view camera from displaying live video. As the SoC operating system is increasingly complex, software freeze and hang problems become more common. The TW884x electronic parts eliminate this problem by monitoring the SoC and the camera output to determine if it is in a frozen or erroneous state. If TW884x detects any problems, it will bypass the SoC and instantly display the rear view camera video.

"The TW884x freeze detection feature uses a hard-wired approach to trigger an interrupt signal in the event of a threshold violation to ensure that the rearview camera meets the FMVSS-111 regulatory requirements and displays live video in real time," said Philip Chesley, senior vice president of precision products at Intersil. In addition, the TW884x rear view camera bypass architecture allows the camera to monitor the signal path to be separated from the infotainment system, helping automakers more easily meet the ISO 26262 functional safety rating standard for the camera system.

TW8844 and TW8845 video processor main features and specifications

• Supports multiple video inputs from analog or digital HD cameras:

O 10-bit ADC The NTSC / PAL analog video decoder supports differential, pseudo-differential and single-ended composite video inputs (two differential or four single-ended) with built-in short circuit and short circuit diagnostics for the battery;

O Two independent digital RGB input ports, each with a maximum of 24 bits RGB @ 160MHz (1080p);

O Two LVDS OpenLDI input ports (shared with the second DRGB input pin), support single channel or dual channel input mode, single channel mode 100MHz (maximum) per channel, 160MHz in dual channel mode;

O Supports a full HD input (1080p) or two HD inputs (720p);

• Provides system flexibility to drive most LCD panels:

O LCD for TTL / TCON, up to 24 DRGB, 160MHz (max);

O LVDS OpenLDI: dual channel; single channel mode 100MHz (maximum) per channel, 160MHz in dual channel mode;

O TW8844 supports 4 channels (lane) MIPI-CSI2 output, the maximum resolution of 1080p, the maximum rate of 1Gb / channel

O TW8845 supports BT.656 output to SoC with maximum resolution of 720p

• Two input measurement engines with freeze / abnormal image detection diagnostics for monitoring inputs from the SoC and the camera.

• EEPROM Quick Start allows register programming and eliminates the need for external microcontrollers

• Two independent H / V scalars that support 1080p (1920 x 1080) maximum output resolution, allowing simultaneous processing of two different input sources while outputting different data to the SoC and display, or driven with different content at the same time Two displays.

• Automatic contrast adjustment (ACA), white balance and gamma correction to optimize video quality.

• Smooth input switch makes the screen flicker when switching various input sources

• AEC-Q100 class 2 certification, -40 ° C to + 105 ° C operating temperature range

Reference: atmega328p andnrf51822

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