The SiI9181A is a Transition Minimized Differential Signaling (TMDS™) switch that enables the connection of an HDMI® source device to a high-definition television (HDTV). Based on the HDMI version 1.3 specification, the SiI9181A is an advanced TMDS switch that delivers a cost-effective method for manufacturers to add an additional HDMI port to the front panel of their HDTVs. Multiple HDMI ports allow consumers to connect a variety HDMI-enabled sources to their HDTVs.

The SiI9181 is ideally suited for use in the front panel of HDTVs and A/V receivers, allowing consumers to connect HDMI-enabled devices such as cameras and camcorders, high-definition DVD and Blu-ray Disk players, set-top boxes and game consoles. The SiI9181A switch 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.

Industry-Standard Compliance
• HDMI 1.3
• DVI 1.0
• EIA/CEA-861D
• HDCP 1.1

Features
• Supports video resolutions up to 1080p @ 60Hz or 720p/1080i @ 120Hz with 12-bit color depth
• Built in Consumer Electronics Control (CEC) support
• HDMI compliant CEC I/O simplifies and lowers cost for adding CEC support to DTV
• Integrated CEC API
• Integrated EDID RAM
• DDC switching
• Individual control of Hot Plug Detect (HPD) for each port
• 5V detect to help speed soft mute of audio during plug-in, plug-out conditions
• Control via local I²C bus
• Low power standby mode to meet Energy Star and other power saving requirements
• 80-pin, QFP package

System Operation
• Register-programmable via slave I²C interface
• Stand-alone mode option
• Acts as simple switcher
• No I²C control required in this mode

Power Management
• 1.8V core provides low-power operation
• Flexible power-down modes