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IT66332: 3-to-1 HDMI Active Switch with EDID RAM

  • Product Information

  • Specification Table

  • Product Information

  • Specification Table

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Product Information

IT66332: 3-to-1 HDMI Active Switch with EDID RAM

The IT66332 is a three-to-one HDMI active switch that supports a signaling rate up to 3.0 Gbps. With 3.0 Gbps capability, the IT66332 can support the new 4K x 2K video format and 1080P@120 Hz.


A one-port SINK system such as flat-panel TVs or LCD projectors could also easily upgrade to three-port by adding an IT66332 at the front. The IT66332 operates in software mode that allows the system to control it via a two-line serial interface, PCSCL/PCSDA. The IT66332 offers two selectable serial programming addresses by PCADR.


With IT66332 embedded CEC/RCP hardware, user can use high-level software API to easily implement all the necessary remote control commands.


As an active switch, the IT66332 equalizes incoming TMDS data with optimal quality regardless of the incoming signal quality. The highly acclaimed equalization technology of ITE TECH. INC. provides support for 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 IT66332 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 IT66332 also embeds three 1K-ohm resisters for HPD signal paths to save external resisters and make it easy to implement the plug authentication.


The IT66332 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 and significantly eases the system design to pass Test ID 8-9: DDC/CEC Line Capacitance and Voltage of the HDMI Compliance Test.

Features

  • Three ports active switch, providing superior performance over traditional passive switches
  • Compliant with HDMI 1.4 standards
  • Supports HDMI 4K x 2K video format and 3D up to 1080P/3D@60 Hz
  • Serial data rate at up to 3.0 Gbps, capable of supporting the following digital video formats in Deep Color Mode at up to 36 bits (12 bits/color):

        -    DTV resolutions: 480i, 576i, 480p, 576p, 720p, 1080i to 1080p

        -   PC resolutions: VGA, SVGA, XGA, SXGA to UXGA

  • Single 3.3V operation
  • Internal AC-coupling at TMDS inputs to cope with uneven intra-pair DC levels of incoming TMDS signals
  • Embedded EDID RAM saves external EDID ROM costs
  • Embedded HPD resistors
  • Integrated HPD switches
  • Active port detection by monitoring PWR5V inputs and TMDS input clock
  • DDC I2C repeater isolates backend DDC capacitive loading from frontend, enhancing the DDC operation compatibility
  • Embedded CEC/RCP hardware
  • Human Body Mode ESD protection up to ±5kV for all TMDS differential input pins
  • Disconnectable input terminations with auto-calibrated impedances
  • Adaptive input equalization supporting long and short cables at the same time
  • Software-mode operation providing flexibility
  • Two possible serial programming device address
  • Programmable TMDS output current level
  • Programmable source terminations compliant with HDMI 1.4 standard, providing optimal source data eyes at high speeds
  • High-impedance TMDS output when disabled
  • Optional backend receiver termination detection for auto power down
  • 64-Pin LQFP package
  • RoHS-compliant and Halogen-Free

Specification Table

After years of technology development, ITE has owned many types of advanced Silicon Intellectual Property (SIP) and highly integrated technology of system software/hardware.

PART NO.

PACKAGE TYPE

DESCRIPTION

FLASH SUPPORT

IT66332

64-pin LQFP (7 mm x 7 mm)

3-to-1 HDMI Active Switch with EDID RAM

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