The IT6861E is a one port MHL/HDMI active Bridge that supports a signaling rate up to 3.0Gbps. The latest HDMI 1.4 and MHL 2.1 specifications are supported by IT6861E which can operate in both HDMI and MHL mode. With 3.0Gbps capability, the IT6861E can support the new 4Kx2K video format and 1080P@120Hz. It also enable the HDMI to display 3D video with 1080P/3D@60Hz format and enable the MHL to display HD video with 1080P@60Hz format.
New cell phones with MHL transmitter can connect to IT6861E directly without external MHL to HDMI dongle device. The IT6861E operates in software mode that allows the system to control it via a two-line serial interface, PCSCL/PCSDA. The IT6861E offers two selectable serial programming addresses by PCADR.
To achieve the friendly remote control environment, the IT6861E also provides a complete solution of HDMI CEC function and MHL RCP function. With IT6861E embedded CEC/RCP hardware, user can use high-level software API to easily implement all the necessary remote control commands.
As a active switch, the IT6861E equalizes incoming TMDS data with optimal quality regardless of the incoming signal quality. 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. In addition, the input terminations are disconnectable and hence significantly lower the system power consumption in inactive modes.
The IT6861E embeds an EDID RAM to save the cost of the three external EDID ROMs. The process of downloading the EDID data into the RAM is simplified by the firmware programming. The IT6861E also embeds three 1K-ohm resisters for HPD signal paths to save external resisters and easy to implement the plug authentication.
The IT6861E also incorporates I2C repeater in its DDC switches, which isolates the DDC capacitances of the two sides of the switch. This allows for longer cable cascading as well as significantly eases the system design to pass Test ID 8-9: DDC/CEC Line Capacitance and Voltage of the HDMI Compliance Test.
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