Hdmi-Compatible/Mhl Digital Interface Separate Extract Audio I2S/Optic Fiber/Coa

B board ：HDMI input, HDMI output, coaxial output, optical output, I2S output, HDMI OVER I2S output. - B board finished product：HDMI input, HDMI output, coaxial output, optical output, I2S output, HDMI OVER I2S output.

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