i.MX Processorsのトピックi.MX6SDL CLKO support range.

i.MX6SDL CLKO support range.

satoshishimoda — Tue, 09 Dec 2014 11:39:55 GMT

Hi community,

Our partner have a question about i.MX6SDL CCM.

Please see CCM_CLK_SRC_DIV description in Table 18-1 of IMX6SDLRM Rev.1.

It says "These output clocks are connected to the pads and can provide support for testing."

Then, they want to confirm the meaning of "can provide support for testing".

Can freescale guarantee the CLKO output for test only?

Or can freescale guarantee the output for any usage?

Actually, they are using CLKO2 for audio master clock on their custom board, but sometimes CLKO output stops.

So they want to confirm the support range of CLKO at first whether freescale can support their usage.

Best Regards,

Satoshi Shimoda

Re: i.MX6SDL CLKO support range.

igorpadykov — Tue, 09 Dec 2014 11:51:44 GMT

Hi Satoshi

you are right: formally speaking these signals are for testing, also

there are parameters for them in Datasheet. From Table 18-1. CCM Sub-blocks IMX6SDLRM :

..two output clocks, CCM_CLKO1 and CCM_CLKO2, for observability.

These output clocks are connected to the pads and can provide support for testing.

Best regards

igor

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Re: i.MX6SDL CLKO support range.

satoshishimoda — Wed, 10 Dec 2014 11:39:12 GMT

Hi igor,

Excuse me, which is correct?

> Can freescale guarantee the CLKO output for test only?

> Or can freescale guarantee the output for any usage?

According to your reply, 'test only' seems correct, right?

Best Regards,

Satoshi Shimoda

Re: i.MX6SDL CLKO support range.

igorpadykov — Wed, 10 Dec 2014 13:44:52 GMT

Hi Satoshi

yes correct, main purpose is for test.

It also can be used for other purposes, provided

that one carefully design hard&software.

~igor

Re: i.MX6SDL CLKO support range.

satoshishimoda — Thu, 11 Dec 2014 08:28:42 GMT

Hi Igor,

Sorry, I have been confused yet to understand whether other purpose is supported or not.

Which is right?

=====

Support usage : test only

It can be used for other purpose even though it is not support.

=====

Support usage : both test & other purpose

=====

Best Regards,

Satoshi Shimoda

Re: i.MX6SDL CLKO support range.

igorpadykov — Thu, 11 Dec 2014 08:33:09 GMT

Hi Satoshi

Support usage : test only

It can be used for other purposes

provided that one carefully design hard&software.

That is one needs to have good knowledge of i.MX6 hardware and software,

then there will be no problems with its usage.

~igor