STMicroelectronics STM32F405 Reference Manual page 181

RM0090
Bit 22 DMA2EN: DMA2 clock enable
Bit 21 DMA1EN: DMA1 clock enable
Bit 20 CCMDATARAMEN: CCM data RAM clock enable
Bit 19 Reserved, must be kept at reset value.
Bit 18 BKPSRAMEN: Backup SRAM interface clock enable
Bits 17:13 Reserved, must be kept at reset value.
Bit 12 CRCEN: CRC clock enable
Bit 11 Reserved, must be kept at reset value.
Bit 10 GPIOKEN: IO port K clock enable
Bit 9 GPIOJEN: IO port J clock enable
Bit 8 GPIOIEN: IO port I clock enable
Bit 7 GPIOHEN: IO port H clock enable
Bit 6 GPIOGEN: IO port G clock enable
Reset and clock control for STM32F42xxx and STM32F43xxx (RCC)
This bit is set and cleared by software.
0: DMA2 clock disabled
1: DMA2 clock enabled
This bit is set and cleared by software.
0: DMA1 clock disabled
1: DMA1 clock enabled
This bit is set and cleared by software.
0: CCM data RAM clock disabled
1: CCM data RAM clock enabled
This bit is set and cleared by software.
0: Backup SRAM interface clock disabled
1: Backup SRAM interface clock enabled
This bit is set and cleared by software.
0: CRC clock disabled
1: CRC clock enabled
This bit is set and cleared by software.
0: IO port K clock disabled
1: IO port K clock enabled
This bit is set and cleared by software.
0: IO port J clock disabled
1: IO port J clock enabled
This bit is set and cleared by software.
0: IO port I clock disabled
1: IO port I clock enabled
This bit is set and cleared by software.
0: IO port H clock disabled
1: IO port H clock enabled
This bit is set and cleared by software.
0: IO port G clock disabled
1: IO port G clock enabled
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