i.MX ProcessorsのトピックRe: How repair SSI bitclock / frame sync fault

How repair SSI bitclock / frame sync fault

rosciio — Wed, 03 Oct 2018 14:44:39 GMT

Hello

Im'working on imx6Q cpu with SSI audio interface. SSI1 works very well into playback and capture mode.

The problem is:

I would like to improve it. I notice that if have a fault on physical bitclock signal I have a problem. In particular in Network mode (with more then 1 slots) slot shift of 1 slot respect the frame sync. the same problem there isn't if I have a fault on frame sync signal.

I enable interrupts on SIER and I see into SISR RFS, TFS, RLS and TLS flags.

I would like to see 1 flag of RFS and after 1 flag og RLS. Flags showed randomic events.

I hope someone help me.

thanks

Marco from Italy

Re: How repair SSI bitclock / frame sync fault

igorpadykov — Thu, 04 Oct 2018 00:55:55 GMT

Hi Marco

once initialized, special sequence may be required for changing SSI parameters,

it is better described in older SSI documentation like

sect.56.5 Initialization/Application Information i.MX51 Reference Manual

https://www.nxp.com/docs/en/reference-manual/MCIMX51RM.pdf

Best regards
igor
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Re: How repair SSI bitclock / frame sync fault

rosciio — Thu, 11 Oct 2018 07:22:38 GMT

Hi Igorpadykov,

I will check the sequence.

thanks

Marco