HDMI A / V to I2S audio / Coaxial / Optical / HDMI - Compatible MHL
This module is an HDMI extractor. It allows to recover the digital audio stream of a digital HDMI source (including MHL) towards a digital coax port / optical or HDMI (I2S via HDMI).
This interface will be particularly useful in complex home theater installations, where multiple sources are likely to successively vary between audio and video functions.
This type of module is ideal in that it separates the video and audio streams to convenience while maintaining appropriate audio formats for advanced facilities.
It has a function of ressampling to select between an output 2-channel / 5.1 channels or audio output corresponding to the input (bypass).
Explanation of the 3 selectable modes: - TV: sends audio through HDMI to the TV, and does not extract audio on the SPDIF output - AMP : extracts stereo audio (2 channels) to the audio outputs - DOU: outputs 5.1-channel audio to the audio outputs
The function of extracting the audio signal to digital output is performed by an EP92A3E chip, complying with the HDMI 1.4 standard. This component is compatible with both single HDMI inputs and MHL 2.0 sources (HDMI to USB adapter typically used to connect a smartphone to an HDMI input).
The EP92A3E chip is capable of addressing different digital protocols, requiring several levels of signal accuracy. It has an HDMI repeater function, which also allows longer cables to be used to cover a greater distance. Its great compatibility with digital audio protocols makes it a very practical accessory to be prepared for any audio/video connectivity problem. It also provides the module with LPCM, HD audio & DSD Audio support. The Audio Soft mute approach is also supported.
The connectivity of this interface is rich in possibilities since it offers the possibility to retrieve the digital audio stream via S/PDIF to a Toslink Optical connector as well as a Coaxial connector already mounted on the board. The I2S output via HDMI LVDS can also be used as a basic output via an HDMI connector already mounted on the PCB. Also two I2S / DSD outputs are available. One is connected to an XH 2.54mm 6-pin male connector; the second is in the form of solder pads.
The I2S LVDS via HDMI connectivity of this device uses the PSAudio format.
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