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How HBR audio bitstream embedded to I2S output interface in parallel mode when audio input source is Dolby TrueHD and DTS-HD Master Audio?

Question asked by juliatsai on Jul 29, 2011
Latest reply on Dec 4, 2012 by DaveD

Dir Sir.

We have questions about how ADV7622 put HBR audio bitstream to I2S output interface in paralle mode(4 data lines). Is there any format diff. output from ADV7622’s I2S between Dolby TrueHD, and DTS-HD Master Audio input from HDMI?

 

Attached file is a description how ADV7622 communicate with our chip if we play a blue disk with Dolby TrueHD audio. It is based on current HDMI R1.4 SW and ADV7622 setup. Our questions is: If we play a blue disk with DTS-HD Master Audio instead of Dolby TrueHD, will this be identical?

 

Description of ADV7622 communication with our chip if we play a blue disk with Dolby TrueHD audio:

 

The I2S Data format is 32bit per channel, but only 16 MSB contain valid HBR audio data. The HBR audio data bit sorting through the I2S datelines is described in Fig. 2

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