HDMI Switch. SiI9185A Datasheet

SiI9185A Switch. Datasheet pdf. Equivalent

SiI9185A Datasheet
Recommendation SiI9185A Datasheet
Part SiI9185A
Description 3:1 HDMI Switch
Feature SiI9185A; Data Brief SiI9185A 3:1 HDMI Switch Data Brief Document # SiI-DB-1016-C01 SiI9185A 3:1 HDMI Switch .
Manufacture Silicon image
Download SiI9185A Datasheet

Silicon image SiI9185A
Data Brief
SiI9185A 3:1 HDMI Switch
Data Brief
Document # SiI-DB-1016-C01

Silicon image SiI9185A
SiI9185A 3:1 HDMI Switch
Data Brief
Silicon Image, Inc.
June 2010
Copyright Notice
Copyright © 2008-2010 Silicon Image, Inc. All rights reserved. These materials contain proprietary and confidential
information (including trade secrets, copyright and other interests) of Silicon Image, Inc. You may not use these
materials except only for your bona fide non-commercial evaluation of your potential purchase of products and/or
services from Silicon Image or its affiliates, and/or only in connection with your purchase of products and/or services
from Silicon Image or its affiliates, and only in accordance with the terms and conditions herein. You have no right to
copy, modify, transfer, sublicense, publicly display, create derivative works of or distribute these materials, or otherwise
make these materials available, in whole or in part, to any third party.
The subject matter described herein contains one or more inventions claimed in patents and / or patents pending owned
by Silicon Image, Inc., including but not limited to the inventions claimed in US patents #6,914,637, #6,151,334,
#6,026,124, #5,974,464 and #5,825,824.
Trademark Acknowledgment
Silicon Image™, VastLane™, SteelVine™, PinnaClear™, Simplay™, Simplay HD™, Satalink™, and TMDS™ are
trademarks or registered trademarks of Silicon Image, Inc. in the United States and other countries. HDMI™, the HDMI
logo and High-Definition Multimedia Interface™ are trademarks or registered trademarks of, and are used under license
from, HDMI Licensing, LLC.
Export Controlled Document
This document contains information subject to the Export Administration Regulations (EAR) and has a classification of
EAR99 or is controlled for Anti-Terrorism (AT) purposes. Transfer of this information by any means to an EAR Country
Group E:1 or foreign national thereof (whether in the U.S. or abroad) may require an export license or other approval from
the U.S. Department of Commerce. For more information, contact the Silicon Image Director of Global Trade Compliance.
Further Information
To request other materials, detailed hardware and software guides, and additional information, contact your local Silicon
Image, Inc. sales office or visit the Silicon Image, Inc. web site at www.siliconimage.com. Information about obtaining
licenses required for using HDMI and HDCP technologies is available from www.hdmi.org and www.digital-cp.com.
© 2008-2010 Silicon Image, Inc. All rights reserved
ii © 2008-2010 Silicon Image, Inc. All rights reserved.

Silicon image SiI9185A
General Description
The SiI9185A 3:1 HDMI Switch is the first generation
of TMDS™ switching devices that supports the
features of revision 1.3 of the HDMI® Specification and
integrates the latest generation of TMDS core
technology. With three HDMI inputs and a single
output, the switch provides a low-cost method of
retransmitting protected digital audio and video and
adding additional HDMI ports to the latest digital TVs
(DTVs), giving consumers a truly all-digital experience.
New DTVs can easily connect to the many HDMI
sources coming to market, including DVDs, Set Top
Boxes (STBs), game consoles, PCs, camcorders, and
digital still cameras.
Unlike some other HDMI switching devices, which use
high-speed analog switches that can degrade TMDS
signals, the SiI9185A switch uses TMDS cores to
recover and retransmit the HDMI signal.
Backward compatibility with DVI 1.0 allows HDMI
systems to connect to any DVI 1.0 source.
The SiI9185A switch is the first generation of devices
from Silicon Image that integrates Extended Display
Identification Data (EDID). The EDID is stored in on-
board RAM downloaded from the system micro-
controller during power-up or initialization. The EDID
is reflected on each of the three HDMI ports through
the DDC bus. The device also allows using EDID
stored on an external ROM, and either location can be
selected for each port. Having the flexibility to provide
EDID content from on-board RAM can eliminate up to
three EDID ROMs and save board space.
This device provides additional features that eliminate
external components, lower system cost, and provide
enhanced features to the end-user. The switch provides
a complete solution for switching sink-side HDMI
signals, such as DDC switching and Hot Plug Detect
(HPD) control for each port, and 5-volt sense to speed
audio mute when changing HDMI cables. For source-
side applications, DDC switching can be bypassed
SiI9185A 3:1 HDMI Switch
Data Brief
with an external 4-channel I2C bus switch to allow
clock stretching.
The TMDS cores are capable of receiving and
transmitting at 2.25 Gbps.
Video resolutions up to 1080p, 60 Hz, 12-bit or
720p/1080i, 120 Hz, 12-bit are supported.
An adaptive equalizer provides long cable support,
even at Deep Color resolutions.
The transmitter includes pre-emphasis.
CEC Support
An integrated HDMI-compliant CEC I/O and the
Silicon Image CEC API eliminate the need for
additional external components.
The API manages all CEC signaling using the CEC
protocol and makes CEC information available to
the system microcontroller, eliminating the
microcontroller overhead needed to manage the
CEC bus and thus simplifying design.
Control Capability
The device can be controlled by the local I2C bus.
An optional stand-alone mode (for which I2C
control is not required) is available for speeds up to
165 MHz and allows the device to act as a simple
The CEC and EDID are still functional during the
very-low-power standby mode when the DTV is
off, which meets Energy Star and other power-
saving requirements.
80-pin, 12 mm by 12 mm, 0.5 mm pitch, TQFP package
Figure 1. Typical Application
© 2008-2010 Silicon Image, Inc. All rights reserved.

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