i.MX ProcessorsのトピックRe: The minimum pulse width specification for WDOG_B

The minimum pulse width specification for WDOG_B

george — Mon, 15 Apr 2019 12:27:23 GMT

Hi all,

Does WDOGx_B shown in the i.MX8M-Mini data sheet mean the WDOG_B external output signal?

Or does it mean the wdog_rst internal signal shown in the reference manual?

We want to know the low width of the WDOG_B external output signal for our product design.

BR,

George

Re: The minimum pulse width specification for WDOG_B

Yuri — Tue, 16 Apr 2019 04:37:14 GMT

Hello,

The CC3 parameters relates to external output signal:

"WDOGx_B output signals (for each one of the Watchdog modules) do not
have dedicated pins, but are muxed out through the IOMUX"

Have a great day,
Yuri

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Re: The minimum pulse width specification for WDOG_B

george — Tue, 16 Apr 2019 05:31:38 GMT

Dear Yuri,

Thank you for your reply.

Does CC3 parameter for external output signal you say mean red mark in the figure below

Can I make the low pulse width longer by Watchdog register settings?
Or is this length uncontollable by the user?

BR,

George

Re: The minimum pulse width specification for WDOG_B

Yuri — Tue, 16 Apr 2019 05:38:58 GMT

The external WDOG output signal (similar as WDOG-1 on the picture)

is not controlled in software.

~Yuri.

Re: The minimum pulse width specification for WDOG_B

george — Tue, 16 Apr 2019 05:47:26 GMT

Thanks.