DS90UB949-Q1: I2S Audio Out

David Canestrari

If Register x55 is set to output audio data on the I2S bus, which output is used? Is it the AUX I2S or Main I2S?

Trying to strip out stereo data (L/R) from an input HDMI source to a DAC for an audio output. Would pin 35 (I2S_DA) be used for stereo?

over 4 years ago

0 Ryan Fleetham over 4 years ago

TI__Expert 7825 points

Hi David,

Thanks for reaching out. I am going to set this up and verify that pin 35 is where the I2S audio will output. I will follow up tomorrow with the results.

Sincerely,

Ryan

0 Ryan Fleetham over 4 years ago

TI__Expert 7825 points

Hi David,

Thanks for your patience here. I did confirm that pin 35 (I2S_DA) is the output for stereo data when the 949 is set to output I2S data from the input HDMI audio. My capture is below:

Sincerely,

Ryan

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DS90UB949-Q1: I2S Audio Out