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Irc6 SSI lrclk problem
Dear NXP: Debugging the SSI of IMX6, now I have a problem.
When playing a 1KHZ sine wave, there is always a noise.
The software dumps the data in the HAL layer, the data is not abnormal,
the hardware also records the data output by IIS, forms a table, restores the data,
and the waveform is not abnormal.
Doubtful point: The frequency of measuring lrclk cannot be stabilized at 44.1K,
about 43.6xxKHz. Can this be optimized, let SSI lrclk stabilize at 44.1K,
the hardware is actually doing cross-over experiment, and the SOC output
of other models is 1KHZ is connected to our DSP, there is no noise, the
difference is on lrclk, so the hardware suspects that this clock causes the
DSP's digital-to-analog conversion to be abnormal.
IMX6 SSI--------DSP has noise
Other SOC IIS signals fly to -----" DSP has no noise
Looking forward to your reply, thank you!
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Hi lou
one can try to rebuild all image from scratch using nxp linux from
codeaurora.org/external/imx/linux-imx repository
linux documentation
Best regards
igor
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