02-17-2019, 06:43 AM
(This post was last modified: 02-17-2019, 06:53 AM by CallMeMike.
Edit Reason: added content
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The RPi's HDMI is a 'standard' HDMI port. Here's some info from Wikipedia:
<< TMDS ( Transition-minimized differential signaling ) on HDMI interleaves video, audio and auxiliary data using three different packet types, called the Video Data Period, the Data Island Period and the Control Period. During the Video Data Period, the pixels of an active video line are transmitted. During the Data Island period (which occurs during the horizontal and vertical blanking intervals), audio and auxiliary data are transmitted within a series of packets. >>
The only pins present are serial data pins. I suspect that the transmitted data cannot cannot be used directly for SPDIF OUT IMHO. The video and audio data are interleaved together so there are no dedicated audio pins as such.
(02-17-2019, 01:23 AM)energyi Wrote: Anyone know if there are HDMI pins dedicated to SPDIF output specifically that can be accessed on a Raspberry Pi?
The RPi's HDMI is a 'standard' HDMI port. Here's some info from Wikipedia:
<< TMDS ( Transition-minimized differential signaling ) on HDMI interleaves video, audio and auxiliary data using three different packet types, called the Video Data Period, the Data Island Period and the Control Period. During the Video Data Period, the pixels of an active video line are transmitted. During the Data Island period (which occurs during the horizontal and vertical blanking intervals), audio and auxiliary data are transmitted within a series of packets. >>
The only pins present are serial data pins. I suspect that the transmitted data cannot cannot be used directly for SPDIF OUT IMHO. The video and audio data are interleaved together so there are no dedicated audio pins as such.
