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A project log for RRB - The Radio Rewind Button

Radio killed the Video-recorder Star

magicwolfiMagicWolfi 04/20/2018 at 13:280 Comments

Just found out that the NXP UDA1380 is end of life:-(. Looks like I am back to component hunting again. Looking for a Audio line in to I2S and I2S to line out codec.

As a replacement, the TI PCM3002 looks very promising. Simple IO but good audio characteristics. I will do some more datasheet reading, but so far it does everything I need. Analog in and out and a digital audio interface, everything controlled through a weird 3-wire interface.PCM3002 Block DiagramAnother option would be the TI PCM3070 audio codec chip, which has 3 audio input pairs. This would change the architecture quite a bit, running the FM radio audio stream analog into the PCM3070 and only have a single I2S interface for all digital audio data. Also the control interface is I2C which would help in my quest to save signal pins between the ElbertV2 and my RRB daughter card.
PCM3070 Block DiagramDecisions, decisions.

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