I'm thinking that the word clock should rise when the bitclock rises, and that's the reason for the issues. Is there a setting somewhere to change the clock timing on the i.MX RT1060 SAI?
While listening more to the DAC, I would say it also is...
Yes but my phone auto uploads to the Internet for easy retrieval. As opposed to swapping devices. But eh, maybe I'll try that next time. Thanks!
If it's in spec, what else can I look at? Thanks for taking the time! FYI, I have a TLV320ADC6140...
There must be some mismatch in my ADC configuration. The 3105 must be putting the ADC on the wrong bitrate or something. Hmm.
TI did mention that they find it unlikely that the clocks are at fault. If it works for I2S mode then it should work...
Hello MarkT,
Thanks for the advice. I didn't know. But you are right, it looks better maybe when 10x is enabled on the probe, and 10x is also enabled on the scope. I presume that's how it's done. My yellow probe is broken, so the 10x switch...
I2S mode works great with both DAC and ADC. It sounds good. But doesn't this look funny still with the data lines seemingly behind the clock. It should be on the rising edge, right?
Fixed the BCLK (disconnected ground on the probe). And played a 1kHz sine wave from USB>Mainboard>3105> and from Phone>3105>Mainboard.
Purple is DAC and BLUE is ADC... It seems off to me. The ADC is too far right. TI said this shouldn't be the...
First shot from the scope.
Yellow = LRCLK
Purple = DAC Data (out of mainboard, into 3105)
Green = ADC Output directly from 3105
Blue = ADC Output after buffer
Based on this. It does appear that the buffer has nearly zero delay to be...