Product Brief
SiI9251
PinnaClear
™
Input Processor
First input processor with Silicon Image’s patent-pending InstaPort™
instantaneous port switching technology
The PinnaClear SiI9251 input processor gives manufacturers the flexibility to add new
features to their HDTV platforms quickly and cost-effectively. In addition to managing all
the input interfaces into the DTV, input processors offer innovations in legacy analog
video inputs with high-quality 12-bit state-of-the-art ADCs and AVI interfaces, new MHL™
interfaces for HD mobile devices and InstaPort technology for faster port switching.
The highly integrated PinnaClear™ SiI9251
video input processor is the first multi-port
input processor for the high-end and mid-range
HDTV market. The SiI9251 features four HDMI
1.3 inputs that deliver Deep Color with 12 bits
of video at 1080p resolution and 60Hz. The
SiI9251 also includes four analog high-definition
component video inputs that support YCbCr
and RGB formats and a 5-input composite and
4-input S-Video switch capable of selecting three
composite outputs or two Y/C outputs.
The four HDMI input ports on the SiI9251 sup-
port MHL, a low pin-count, low power interface
designed for mobile CE devices. MHL technol-
ogy enabled mobile devices can be connected
directly to an SiI9251-equipped DTV without a
dock or dongle, with auto discovery of HDMI
or MHL source devices in the hardware.
The SiI9251 supports multiple audio formats
and all common audio sample rates up to
192kHz. Audio is available for output on an
S/PDIF port or an I
2
S port.
The SiI9251 analog video interface consists of
triple-channel 12-bit analog-to-digital converters
(ADCs) for capturing RGB and YPbPr inputs.
With conversion rates ranging from 12.5 MSPS
to 170 MSPS, the Analog Video Interface (AVI)
inputs capture 480i/576i to 720p/1080i/1080p
TV formats and PC graphic formats up to 1600
x 1200 (UXGA). An additional 12-bit ADC is
integrated for SCART compatibility to overlay
RGB data over CVBS. This fully integrated AVI
includes an internal voltage reference and an
anti-alias filter with selectable cutoff frequencies.
The SiI9251 processor also integrates a data
slicer/decoder to capture VBI data services.
In support of the processor’s HDMI functional-
ity, the the SiI9251 input processor comes pre-
programmed with HDCP keys to simplify
manufacturing and provide the highest level of
HDCP key security. The chip includes a 256-
byte Extended Display Identification Data
(EDID) RAM block and support for Consumer
Electronics Control (CEC) over a single wire
bus. SiI9251 supports extremely low standby
power with power islands enabling CEC and
EDID operations when the device is in shut-
down mode consuming less than 35mW.
Applications
• LCD, plasma and
projection DTVs
Key Features
• Patent-pending
InstaPort technology
• Four HDMI 1.3 input
ports support MHL
• Four component or
RGB inputs
• 12-bit ADC for Deep
Color analog video
• Four S-Video and
five CVBS inputs
• Full SCART support
• 2-channel digital
audio up to 192KHz
• Integrated CEC
• Four integrated
EDIDs with NVRAM
for each HDMI port
SiI9251 System Diagram
Game console
with HDMI
HD
Camcorder
Blu-ray DVD
Portable
Media Player
Up to 4 HDMI or MHL Sources
Set
Top
Box
PC
DV
D
Game console
with Component
SiI9251
Input
Processor
Standard
DVD
Up to 4 Component, S-Video or Composite Sources
SiI9251
SiI9251 Starter Kit
(CP9251HDMI/ADC)
Contents include:
Features
Industry-Standard Compliance
System Operation
• HDMI 1.3
• ITU-656
• DVI 1.0
• HDCP 1.1
• EIA/CEA-861D
HDMI/MHL Inputs
Hardware
• SiI9251 input processor
daughter board
• SiI9134 transmitter daughter
board
• Motherboard
• HDMI to HDMI cable
Software
• Simon receiver software
tool
Documentation
• User's guide
• Schematics
• Bill of materials (BOM)
•
•
•
•
Register-programmable via slave I
2
C interface
Auto video mode simplifies design
Auto audio mode allows more robust system
Flexible interrupt registers with interrupt pin
• InstaPort technology on HDMI ports
• Four HDMI / MHL inputs
• Resolution support up to 1080p @ 60Hz or
720p/1080i @ 120Hz with 36-bit color via
HDMI or 1080p @ 30Hz or 720/ 1080i @
60Hz with 24-bit color via MHL
• Integrated RGB-to-YCbCr color space conver-
sion with 12-bit accuracy
• x.v.Color support
• 4:2:2 to 4:4:4 converter with 14-bit accuracy
• Integrated CEC Consumer Electronics Control
• Integrated EDID for each HDMI Port
Analog Video Inputs
Digital Audio Output
• Industry-standard S/PDIF and I
2
C output
• Supports high-end audio including SACD and
DVD-Audio: 2-channel at 32-192kHz
• Programmable I2S output supports numerous
low-cost audio DACs
• Supports IEC60958 2-channel PCM
• Supports IEC61937 compressed audio
Content Protection
•
•
•
•
Video format detection in hardware
4x12-bit ADC @ 170 MSPS conversion rate
1.4 Vp-p analog input range
Supports RGB and component (YPbPr) video
signals up to 1080p
• D1/D2/D3/D4/D5 D-Connector support
SCART FB inputs delay matched and multi-
plexed to one FB output
• Macrovision (Level 1) detection and handling
•
•
•
•
Integrated HDCP cipher engine
Built-in HDCP BIST
Pre-programmed HDCP keys
Built-in HDCP self-test
Power Management
• Low standby power mode with auxiliary
power mode for CEC and EDID support
Package
• 208-pin LQFP
InstaPort technology dramatically reduces the wait
time when switching between HDMI sources by per-
forming background HDCP authentication with all
source devices connected to the DTV. Since the authentication process is done on all ports simultane-
ously, when a new input is selected by the viewer it can begin streaming content immediately without
waiting for HDCP authentication. As consumers continue to connect an increasing number of devices to
their DTVs—from DVD players and game consoles to PCs and set top boxes—switching between them
with limited delay becomes an increasingly desired feature.
Silicon Image, Inc.
1060 E. Arques Avenue
Sunnyvale, CA 94085
T 408.616.4000
F 408.830.9530
www.siliconimage.com
Copyright © 2008 Silicon Image, Inc. All rights reserved. Silicon Image, the Silicon Image logo, SiI9251, MHL, Mobile High-definition Link, InstaPort, the InstaPort logo, PinnaClear, and the PinnaClear logo are
trademarks or registered trademarks of Silicon Image, Inc. in the United States and/or other countries. HDMI, the HDMI logo, High-Definition Multimedia Interface, are trademarks or registered trademarks in the
United States and/or other countries and are used under license from HDMI Licensing, LLC. All other trademarks are the property of their respective owner in the United States and/or other countries. Product speci-
fications are subject to change without notice.
Part Number: SiI9251CLU
SiI-PB-1041 rev1 6/08
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