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Honored Contributor
Honored ContributorAudio Extract MegaCore
Hello, we are planning to buy Audio Extract core for audio extraction from SDI signal. The datasheet says, that the output is 12S/AES. Is there a mistake and it is possible to get I2S audio output...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- Hi Socrates May I ask you a question about the output of SDI extractor? The SDI extractor has three outputs - aud_ws, aud_data, aud_clk_out. Are these three signals I2S signals? (I've searched keyword I2S in SDI user guide and cannot find it) If so, I think I can set these three signals as output pins and connect to some audio processing IC. Thanks. --- Quote End --- Hi, YUFU0511 and Socrates! SDI Audio Extractor has not only aud_clk_out ( which is an output ), but also aud_clk ( which is an input ). Both are described as being 3.072 MHz. How to deal with that? Where from do I have to take 3.072 MHz to feed to aud_clk input? From aud_clk_out output? Does that mean, that I have to connect aud_clk_out to aud_clk input? It seems strange, that Audio Extractor may need anything else besides input video signals. Did You try connecting aud_ws, aud_data, aud_clk_out to I2S inputs of any audio processing IC? If Yes, the does it really recognize them as I2S ?
