IP Product Brief
Applications
• Mobile phones with
MARVIN-5MP
5 Megapixel Camera Interface
The 5 Megapixel Camera Interface DesignObject™ (MARVIN-5MP*) is a complete video
and still picture input unit which is targeted on SoCs with image capture capability as
used in mobile phones with integrated cameras. MARVIN-5MP contains image process-
ing, scaling and compression functions. The integrated image processing functions allow
simple CMOS sensors without any image preprocessing to be supported as well as sen-
sors with integrated YCbCr processing.
integrated cameras
• Mobile applications
requiring a mega-
pixel still image
or video input
• SoCs with image
capture capability
Key Features
• Image processing
and image
improvement
Scaling is used for downsizing the sensor data in
order to display an image on a connected LCD,
or for generating a YCbCr 4:2:0 data stream for
video compression. Output data is transmitted
via an AHB interface. All functional blocks can
be configured using an on-chip microprocessor
via an AHB slave interface.
data to be stored. Besides using the parallel cam-
era interface, camera sensors can be connected
through serial interfaces according to the MIPI
or SMIA standard. MARVIN-5MP can easily be
adapted to lower or higher image resolution, e.g.
for saving gate count or memory.
MARVIN-5MP represents a complete video and
• Image scaling of
main and self
picture
• Compression
functions for still
picture and video
• JPEG encoding
on-the-fly
The scalers can handle up- and downscaling as
well as format conversions of YCbCr formats.
True Digital Zoom is supported in a two step
approach, where the image in the first step is
written to system memory and in the second
step is read back from system memory and up-
scaled. All data is transmitted via the AHB mas-
ter interface into system memory. The memory
locations are programmable depending on the
still picture input unit. It contains image process-
ing (ISP), scaling and JPEG compression func-
tions. For displaying on LCD the
MARVIN-5MP also includes a function to con-
vert YCbCr back to display-ready RGB format.
In this case the input format has to be YCbCr
4:2:2. In addition, the display-ready RGB data
can be rotated in 90° steps.
*MARVIN-5MP was formerly part
of the sci-worx GmbH product
portfolio. Silicon Image acquired
sci-worx in January 2007.
MARVIN-5MP Gate Count
Gates
JPEG
Other
Functions
83K
414K
Ram
41kByte
44kByte
Gate = 2 Input-NAND equivalent,
using TSMC 0.13 μm process and
standard cell libraries
Marvin-5MP
Main Picture
Scaler & Self
Picture Scaler
Two blocks are used to scale the
image to the resolution needed
for capturing, viewfinding or
encoding. They use separate
scaling engines for luminance
and chrominance processing.
This enables both color compo-
nents to be handled independ-
ently and thus allows format
conversion from YCbCr 4:2:2
to 4:2:0, 4:1:1, 4:1:0, and even
4:4:4 using different scaling
factors for luminance and
chrominance. The scaler in
self-picture path is able to up-
scale up to VGA resolution
for adapting image resolution
and format from the system
memory input I/F.
Features
Features
• Super impose, digital zoom & continuous
resize support
•
ITU-R BT.601 & 656
compliant video interface
•
HW JPEG
encoder including
JFIF1.02
stream
generator with programmable quantization
and Huffman tables
• Display-ready RGB output in self-picture path
• Rotation in 90° steps for display-ready RGB
output
• Max. 105 MHz system & max. 100 MHz sen-
sor clock
• YCbCr 4:2:2 and 4:2:0 processing
• Frame skip support for video encoding
(e.g. MPEG-4)
• Format conversion between YCbCr 4:2:2,
4:2:0, 4:1:1 and 4:1:0 formats
• Planar and semi-planar storage format for
YCbCr
• 32-bit AHB master interface to system mem-
ory supporting four and eight beat bursts
• Power management by software-controlled
clock disabling for currently not needed sub-
modules
• 12-bit camera interface (RGB Bayer input)
• MIPI & SMIA serial input interface
• Maximum input resolution of 5.3 Megapixels
(2600 x 2048)
• Bad pixel detection and correction
• Lens shade correction (vignetting)
• Video image stabilization support
• Auto focus measurement
• Auto white balancing
• Auto exposure support by brightness
measurement
• Histogram calculation
• Flash light control
• Mechanical shutter support
• Black level compensation
• Enhanced color interpolation (RGB Bayer
demosaicing)
• Sharpening / blurring / noise filter
• Color correction matrix (cross talk matrix)
• Digital image effects (emboss, sketch, sepia,
grayscale, color selection, negative image)
Color Processing
JPEG Decoder (optional)
Control Unit
This module is designed for color adjust-
ments. It can be used to adjust contrast,
brightness, saturation and hue.
Image Effects
An optional JPEG decoder may be inserted
for post-processing and display of JPEG
images, which could in addition be used for
efficient storage of superimpose bitmaps.
Y/C Splitter
A set of image effects is supported which
includes sepia, greyscale, color section, nega-
tive, emboss and sketch. The image effects
block is also available for post processing of
images through the DMA read feature of
MARVIN-5MP.
Superimpose
The Y/C SPLIT module is responsible for
providing component separated YCbCr
4:2:2 pixel data for further processing.
JPEG Encoder
The CTRL block is the interface between the
internal PVCI port from MARVIN-5MP’s
AHB slave and local configuration blocks. It
allows access to a set of configuration regis-
ters. A host CPU is required for static and
dynamic configuration of these registers dur-
ing operation of MARVIN-5MP.
This module overlays an image with a
bitmap from the main memory. The color of
the transparent area in the superimpose
bitmap is configurable. In addition this
block is able to position a bitmap with the
appropriate coordinates over the camera
image range.
The hardware JPEG encoder accepts YCbCr
4:2:2 data up to a resolution of 2600x2048
pixels (5.3 MPixel). It encodes the data and
produces a JFIF 1.02 compliant stream,
hence no stream post-processing is required.
Memory Interface
Silicon Image, Inc.
1060 E. Arques Avenue
Sunnyvale, CA 94085
T 408.616.4000
F 408.830.9530
www.siliconimage.com
The MI is responsible for writing the image
data stream either color component com-
bined or color component separated into
system memory.
© 2007 Silicon Image, Inc. All rights reserved. Silicon Image, the Silicon Image logo, Marvin-5MP are trademarks or registered trademarks of Silicon Image, Inc. in the United States and other countries. Other trade-
marks are property of their respective holders. Product specifications are subject to change without notice.
Part Number: Marvin-5MP
SiI-PB-1008 rev1 3/07
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EEWORLD
