Output sampling frequency in ADAU1442 SigmaStudio
I have problem with output frequency. I set the input frequency 44,1 kHz in TDM Flexible Mode then I compile my project and download to chip but the output freqency is still 48 kHz. Is it possible to change output frequency to 44,1 kHz in SigmaStudio?
Audio Signal Processors
adau1442
SigmaDSP Audio Processors
Hi Juna,
One suggestion involves your crystal frequency. Unlike with other sample rates, you need a 11.2896 MHz crystal to operate at 44.1KHz (see the ADAU1442 data sheet, page 21). This sets the master clock and other clocks, including the output LRCLK when in master mode (page 42). Since there's no on-chip option for 44.1 KHz from the usual 12.288 MHz crystal, SigmaStudio can't switch between these rates by itself.
Best regards,
Bob
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