FMC Clock Mux not found

mids400 · ‎2023-07-13

Hello,

Im working on a Project, which i use with it STM32F750N8H6 with external Memory and im trying to interface them to each other.

I have so far now done the Configuation of GPIO, TimingParameters..etc but i wanted giving too the Value of the Clock Frequncy for SDRAM in Clock-Configuation, then i have not found the FMC-Clock Mux!

Where can i entering the Value in order to make the Interface well working?

Thanks,

Ghofrane GSOURI · ‎2023-07-13

Hello @mids400

First let me thank you for posting.

Based on the RM0385 : The AHB clock (HCKL) is the reference clock for the FMC.

So in order to change the clock frequency you need to change the HCLK

Thx

Ghofrane

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View solution in original post

Ghofrane GSOURI · ‎2023-07-13

Hello @mids400

First let me thank you for posting.

Based on the RM0385 : The AHB clock (HCKL) is the reference clock for the FMC.

So in order to change the clock frequency you need to change the HCLK

Thx

Ghofrane

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

mids400 · ‎2023-07-13

Hello Ghofrane,

Well, i sew that and i have changed it to 200MHz that means now the value of FMC Clock 200MHz. Then i have configured the SDRam Duty 2 Cycle in order to get 100MHz as mentioned in the Datasheet of the Memory.

Its worked now very well.

Regards,

Mahdi