ARM中的FCLK、HCLK、PCLK
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FCLK, HCLK, and PCLK
FCLK is used by ARM920T.
HCLK is used for AHB bus, which is used by the ARM920T, the memory controller, the interrupt controller, the LCD
controller, the DMA and USB host block.
PCLK is used for APB bus, which is used by the peripherals such as WDT, IIS, I2C, PWM timer, MMC interface,
FCLK is used by ARM920T.
HCLK is used for AHB bus, which is used by the ARM920T, the memory controller, the interrupt controller, the LCD
controller, the DMA and USB host block.
PCLK is used for APB bus, which is used by the peripherals such as WDT, IIS, I2C, PWM timer, MMC interface,
ADC, UART, GPIO, RTC and SPI.
APB(Advanced Peripheral Bus),片上外设总线。主要用于慢速片上外设与ARM核的通讯。
AHB(Advanced High performance Bus),高性能总线。主要用于系统高性能、高时钟速率模块间通信。
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