The digital audio extraction is accomplished by EP94Z3 , a HDMI 1.4b standard compliant chip.
This component is compatible both with the single HDMI input sources and with 1.1 MHL (HDMI Adapter - USB typically used to connect a smartphone to a HDMI input).
The EP94Z3 chip is able to address the various digital protocols, requiring multiple levels of accuracy of the signal. It has an HDMI repeater function, which also allows the use of longer cables to cover a greater distance.
Its high compatibility with digital audio protocols make it a very practical accessory to be prepared for any audio / video connectivity problems. Moreover the module has support for LPCM support, HD Audio & DSD Audio. The Audio Soft mute approach is also supported.