Product Brief
SiI9185
VastLane
™
HDMI Switch
3:1 HDMI 1.3 Switch with Integrated CEC Functionality
The VastLane SiI9185 is a Transition Minimized Differential Signaling (TMDS™) switch that
enables the connection of multiple High-Definition Multimedia Interface™ (HDMI™)
source devices to high-definition televisions (HDTVs). Based on the HDMI version 1.3
specification, SiI9185 is an advanced TMDS switch that delivers a cost-effective method
• HDMI 1.3 with DDC
Applications
• DTVs and HDTVs
• A/V receivers,
• HDMI switches and
repeaters
Key Features
& HPD switching
• CEC support with
CEC pin & API
for manufacturers to add additional HDMI ports to their HDTVs. Multiple HDMI ports allow
consumers to connect a variety HDMI-enabled sources to their HDTVs.
The SiI9185 is a three-to-one (3:1) switch ideally
suited for use in the back panel of HDTVs and
A/V receivers, allowing consumers to connect
multiple HDMI-enabled devices such as high-
definition DVD players, set top boxes and game
consoles. The SiI9185 switch selects a single
HDMI or Digital Visual Interface™ (DVI™) sig-
nal from the three HDTV receiver ports and
generates fully compliant HDMI/DVI audio/
video output, as well as DDC/HDCP, HPD and
+5V switching in full compliance with the
HDMI and DVI specifications.
The SiI9185 is among Silicon Image’s first gener-
ation of devices that integrate the Extended
Display Identification Data (EDID). The EDID is
stored in on-board RAM that is downloaded
from the system microcontroller during power
up or initialization. The EDID is reflected on
each of the three HDMI ports thru the DDC
bus. This allows elimination of up to three EDID
ROMs, while also saving board space.
The SiI9185 provides a complete, simple, solu-
tion to enabling Consumer Electronics Control
(CEC) in a DTV. CEC is a single-wire bus that
transmits remote control commands throughout
a home network. The SiI9185 integrates both an
HDMI compliant I/O and Silicon Image's CEC
API. The CEC I/O meets all HDMI compliance
tests and eliminates the need for additional
external components, again saving board space
and thereby significantly lowering the system
level control by the microcontroller and simpli-
fying firmware overhead.
• Integrated EDID
RAM
• Supports Deep
Color
• Long cable support
with built-in
equalizer
SiI9185 System Diagram
SILICONIMAGE [ Silicon image ]
