L2Tek stocking new HDMI/MHL video playback receiver chips for broadcast industry

L2Tek, a manufacturers’ representative and distributor of components and sub-assemblies for professional video and high-speed communications systems, has announced availability of new video ICs from Explore Microelectronics, a fabless semiconductor company based in Taiwan. Aimed at companies designing and manufacturing digital and analogue audio/video (AV) broadcast and switching equipment, the EP9555E is a three-port low-power HDMI/MHL receiver with a video up/down scaler and CCIR 601/656 digital video output.

MHL (Mobile High-Definition Link) is a mobile audio/video interface standard that allows the connection of devices such as smartphones or tablets among many other devices – most commonly via a device’s micro-USB interface – to the HDMI port of a high-definition TV (HDTV) or AV receiver. The current industry standard MHL (MHL 2.0) supports resolutions up to 1080p HD resolution, while also being able to charge the connected device, although the most recently released specification (MHL 3.0) will include support for 4K (Ultra HD) formats.

Supporting video output up to 1080p at 60Hz, the EP9555E is compliant with HDMI 1.4, MHL 2.0 and HDCP 1.4 specifications. The chip supports one HDMI/MHL dual-mode port and two MHL ports and also two-channel IIS and S/PDIF audio outputs. Integrated into the IC are equalizer switches, an HDMI/MHL core, an HDCP (High-bandwidth Digital Content Protection) engine, video scaler and EDID (Extended Display Identification Data) RAM in a single chip.

The EP9555E’s on-chip video scaler is able to scale the input video up or down to any resolution within the range of 0.5 to 2X in both horizontal and vertical modes. This is useful for converting an EIA standard video to suit an LCD screen with a different resolution. The EP9555E also integrates an on-chip 8-bit MCU for HDMI/MHL/HDCP scaler control and CEC/RCP applications, enabling ease of use and negating the need to develop user firmware. Other features of the device include low power operation, and stand-by current of less than 1mA in power-down mode. The EP9555E is available in a 128-pin LQFP package.

Also new at L2Tek and suitable for switchbox, TV with PIP/POP and AV receiver applications is the EP9452 from Explore Microelectronics. The EP9452 is an HDMI 1.4 four-in two-out repeater IC with MHL, ARC (Audio Return Channel) and OSD (On-Screen Display). The chip supports one HDMI/MHL input port, three HDMI input ports and two HDMI output ports, along with four HDCP receive (RX) and two transmit (TX) ciphers. The chip’s four HDCP RX ciphers means that chip supports very fast port switching, also known as Instant Port Switching (IPS), without the need to redo HDCP authentication during port switching. The IC also supports four ports of on-chip EDID RAM to reduce system costs.



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