topic Re: RT1021 secondary pinmux option issue in i.MX RT Crossover MCUs

RT1021 secondary pinmux option issue

Neil_23260919 — Tue, 20 Feb 2024 09:05:10 GMT

I am currently developing using RT1021. Now I want to use the FlexSPI of the secondary pinmux option to boot, but after setting BOOT_CFG1[3:1] to "111", there is no signal for CLK and CS (Boot mode set as internal mode).
The power supply and power sequence are confirmed to be OK. Is there anything else that needs to be set in the hardware?

Re: RT1021 secondary pinmux option issue

Pavel_Hernandez — Thu, 22 Feb 2024 03:32:30 GMT

Hello, my name is Pavel, and I will be supporting your case, let me get into your case and when I have more information, I will contact you.

Best regards,
Pavel

Re: RT1021 secondary pinmux option issue

Neil_23260919 — Fri, 23 Feb 2024 00:42:32 GMT

Hi Pavel

Thank you for your reply.

I can't use the FlexSPI secondary pinmux option (after power on, CLK and CS have no signals), but when switching to BOOT_CFG1[3:1]="000", FLEXSPI_A_SS0_B and FLEXSPI_A_SCLK have signals
I don't know if I want to use the FlexSPI secondary pinmux option, what other hardware settings are needed?

B.R.

Re: RT1021 secondary pinmux option issue

Neil_23260919 — Fri, 23 Feb 2024 00:43:12 GMT

Hi Pavel

Thank you for your reply.

B.R.

Re: RT1021 secondary pinmux option issue

Pavel_Hernandez — Wed, 28 Feb 2024 01:27:10 GMT

Hello, sorry for the late response, for test proposes could you download the SPT tool we will check your communication.

MCUXpresso Secure Provisioning Tool | NXP Semiconductors

Let me know if you have doubts.

Best regards,
Pavel