The IT6661 is a one-to-two MHL/HDMI dual-in, HDMI out active splitter that supports a signaling rate up to 3.0Gbps. It is compatible with the latest HDMI 1.4 and MHL 2.0 specifications. With 3.0Gbps capability, the IT6661 can support content stream such as the new 4Kx2K format, 1080P@120Hz, 3D video with 1080P/3D@60Hz in HDMI, or 1080P@60Hz format in MHL. Via IT6661, not only ultra-high definition video content can be split to all its outputs, but also newly designed cell phones with MHL output can be connected to existing HDMI Ports without dedicated MHL to HDMI dongle device.
To achieve a friendly remote control environment, the IT6661 provides a complete solution of HDMI CEC function and MHL RCP function as well. With IT6661’s embedded CEC/RCP hardware, developers could use high-level software API to implement all the necessary remote control commands easily.
The IT6661 equalizes incoming TMDS signal to optimal and outputs retimed data to downstream sinks. The highly acclaimed equalization technology of ITE TECH. INC. provides for support of long or low-quality HDMI cables at even the highest speeds. Input terminations of the TMDS inputs and output current levels are both programmable.
An EDID RAM is embedded in IT6661 to save the cost of the external EDID ROMs. The process of downloading the EDID data into the RAM is simplified by firmware programming. Also, each IT6661 chip comes preprogrammed with a unique Source and a Sink HDCP key, in compliance with the HDCP 1.4 standard so as to provide secure transmission of high-definition content. Adopters are not required to purchase any HDCP keys or ROMs.
The IT6661 operates in software mode that allows the system to control it via a two-line serial interface, PCSCL/PCSDA. Two serial programming addresses can be selected by PCADR.