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Large delays with ADAU1701/1702

Question asked by ChristianH on Apr 8, 2010
Latest reply on Oct 6, 2010 by JeradL



any idea on how to increase the delay time on ADAU1701/1702 SigmaDSPs?


The internal RAM is useful for I think approx. 5ms Delay @ 48kHz.

If I want to have up to 1 second of delay time how would I realize this?

As I can see there is no external memory interface to connect a SDRAM, SRAM, Flash or EPROM etc.


Only possibility would be a SPI memory connected on the SPI interface.

But I doubt that the data exchange is fast enough to have 3 samples read/write in a 48kHz frame.

I roughly came to a required clock of 16MHz...?