topic Re: S32K322 clock selection in S32K

S32K322 clock selection

vignesh3 — Tue, 22 Apr 2025 09:59:13 GMT

Hi there,

In S32K144 I can select the clock to the peripheral and enable/disable clock by using the PCC_x register.

But when It comes to K3 I need to use MC_ME this Partition register. In this I can not able to select different clock sources only I can enable/disable the peripheral clock.

And which peripheral goes to which Partition that also not clear, could you give me idea about how these peripheral are mapped with different partitions to enable and disable clock to the particular peripheral.

Re: S32K322 clock selection

petervlna — Wed, 23 Apr 2025 06:43:59 GMT

Hello,

In this I can not able to select different clock sources only I can enable/disable the peripheral clock.

For S32K3xx clocks are configured in CGM module:

reference manual : Chapter 25 Clock Generation Module (MC_CGM)

And which peripheral goes to which Partition that also not clear

In the clocking chapter you will find which clock is routed where.

I recommend you to read carefully clocking chapter where it is described in details.

Best regards,

Peter

Re: S32K322 clock selection

vignesh3 — Wed, 23 Apr 2025 08:55:27 GMT

Hi @petervlna ,

I have checked the RM, but I could not able to fin out these info.

Can you tell me which are the clocks (CORE_CLK/AIPS_SLOW_CLK/AIPS_PLAT_CLK/HSE_CLK) I can use for UART0 in s32k322?

Re: S32K322 clock selection

vignesh3 — Thu, 24 Apr 2025 05:11:03 GMT

Hi @petervlna ,

I have checked the RM, but I could not able to fin out these info.

Can you tell me which are the clocks (CORE_CLK/AIPS_SLOW_CLK/AIPS_PLAT_CLK/HSE_CLK) I can use for UART0 in s32k322?

Re: S32K322 clock selection

petervlna — Thu, 24 Apr 2025 06:08:29 GMT

Hello,

You can find it in reference manual. It is Plat_clk

Best regards,

Peter