SYSCFG Clock STM32F4x

[WalterE]

Hi!

I am about to code my CLK enable tree, without CUBEMX. - I just took CUBEMX as referene.

CUBEMX generates me a line called __HAL_RCC_SYSCFG_CLK_ENABLE().

Unfortunately i could not find any clock called SYSCFG in the clock tree (CubeMX nor DM31020).

It seems that i only need it when i use ETH, memory remao, ext. or ext. interrupt.

So my questions are:

• Where do i get information about the SYSCFG CLK?
• Do i need to set up SYSCFG CLK. if i don't use any of the features mentioned above
• Why is SYSCFG CLK not visible in the CLK tree (may you also use another name for SYSCFG CLK?)

regards,

Walter

[waclawek.jan]

Enabling this clock is needed so that the SYSCFG module can be used

etc.

JW

[WalterE]

Thats excatly the information that i found, but nothing more. - Thanks anyway. Hoped to see a block diagram or something similar.

[waclawek.jan]

Well, there's nothing more to it. SYSCFG is just a collection of registers to control a few things, that did not fit elsewhere. And access to these registers is controlled by the clock enable bit in RCC.

JW