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AD1941 i2c with USBi programmer

Question asked by benybiles on Oct 16, 2015
Latest reply on Oct 17, 2015 by benybiles

Hi,

 

Just wondered if the USBi programmer can supply the clock to the AD1940 / 1 to initialize the chip or if I need to supply an additional external mclk ? I see on the schematic of the USBi there is a 24mhz crystal but it doesn't quite divide into the 48khz or 96khz x FS clock speed I would select on the PLL pins of the IC.

 

I guess I'll hook another clock from a codec and see if that works. chip not initializing with USBi alone.

 

just thought someone might know the answer already ? the Eval boards are using the master clocks generated from Codecs it seams.

 

thanks , ben

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