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new products
also helping to conserve the environment by providing
electric powertrain products such as high performance
and highly reliable lithium-ion batteries for the electric
vehiclemarket, which is predicted to continue expanding.
Intersil Ships Automotive Industry’s First
Full HD LCD Video Processor
Intersil, a subsidiary of Renesas Electronics Corporation
(TSE: 6723), today announced the TW8844 LCD video
processor that interfaces with the latest generation of
automotive SoCs. The highly integrated TW8844 is the
first high-definition (HD) 1080p LCD video processor
with analog video decoder, two scalers and MIPI-CSI2
SoC interface, and builds on Intersil’s automotive video
leadership in infotainment and display systems. The
TW8844 provides the reliability automakers require to
ensure their rearview camera systems are compliant
with the U.S. Federal Motor Vehicle Safety Standard
(FMVSS-111) for preventing injury or death caused by
backover accidents. The TW8844 enables the migration
from analog to digital camera systems, and supports a
variety of video interfaces and LCD panel resolutions
up to full HD 1920 x 1080. The TW8844 LCD video
processor is ideal for center stack/head units, full display
rearview mirrors, instrument cluster displays, and dual
headrest rear-seat entertainment systems. Watch a
video on the TW8844 solution.
Automakers are starting to make rearview camera
systems standard equipment for all new car models
worldwide. In the U.S., the National Highway Traffic
Safety Administration mandated in March 2014 that
automakers implement “rear visibility technology”
as standard equipment for all vehicles under 10,000
pounds, as part of the Kids Transportation Safety Act.
The new FMVSS-111 regulation specifies that the area
behind a vehicle must be visible to the driver when the
vehicle is placed into reverse, thereby minimizing blind
spots. The law aims to reduce the number of deaths
and injuries caused by driver backup accidents, many
involving young children. The FMVSS-111 law requires
that all new vehicles sold in the U.S., beginning in May
2018, have rearview backup cameras and the rear
camera video must display in less than two seconds
after the driver places the vehicle into reverse gear.
The TW8844 video processor with MIPI-CSI2 output and
TW8845 video processor with BT.656 output exceed
the requirements of the FMVSS-111 law, displaying live
video with graphics overlay in less than 0.5 seconds after
vehicle ignition. The TW884x provides a robust rear-
camera architecture to overcome the fast boot reliability
issues inherent with today’s more complex center stack
systems. Today’s head units are prone to operating
system (OS) software freezes and hang-ups that
display a frozen image or prevent the rear camera from
displaying live video. With SoCs running increasingly
complex operating systems, software freezes and
hang-ups are more common. The TW884x eliminates
this problem by monitoring the SoC and camera output
to determine if they are in a frozen or corrupted state. If
the TW884x detects any issue, it bypasses the SoC and
instantly displays the rearview camera video.
“The TW884x’s frozen detection feature is hardwired
to trigger an interrupt signal if thresholds are violated,
ensuring the vehicle’s rearview camera is FMVSS-111
compliant and live video is instantly displayed,” saidPhilip
Chesley, senior vice president of Precision Products at
Intersil. “In addition, the TW884x’s rearview camera
bypass architecture decouples the camera-to-display
signal path from the rest of the infotainment system,
which makes attaining an ISO 26262 functional safety
rating on the camera system easier for automakers.”
Key Features and Specifications of TW8844 and
TW8845 video processors
Support several video inputs from analog or digital HD
cameras:
•
10-bit ADC 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-to-battery and short-
to-ground diagnostics
•
Two independent digital RGB input ports up to 24-bit
RGB at 160MHz (1080p) each
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