RT1020: How long is a wait state (e.g. GPIO, GPT peripherals)?

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RT1020: How long is a wait state (e.g. GPIO, GPT peripherals)?

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Contributor IV

Hi,

Regarding document:

i.MX RT1020 Processor Reference Manual, Rev. 1, 12/2018

What does it mean by a wait state? Is this a single cycle of the peripheral’s root clock, the periph clock, processor clock, a __NOP() or what?

E.g. the GPIO peripheral:

Section 11.5.2.2, page 786

Section 11.5.4.2, page 789

Section 11.5.8.2, page 799

E.g. the GPT peripheral:

Section 46.7 GPT Memory Map/Register Definition, page 2451

Section 46.7.1 GPT Control Register (GPTx_CR), page 2453

There are other references to the wait state.

Many thanks and regards,

Ronnie

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NXP TechSupport
NXP TechSupport

Hello,

Please refer to the information as the it.

 

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 Hope it  help you. Have a nice day.

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Contributor IV

Thank you for your reply.

Unfortunately, I'm not sure that answers my question. Perhaps my question was a bit clumsy.

When the document talks about wait states, I understand that it is in terms of clocks cycles. I.e. one wait state = one clock cycle.

But which clock? Is it the the main processor clock? Or is it the root clock to the peripheral in question? Please see the sections I mentioned.

Kind regards,

Ronnie

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