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AN4031 数据表(PDF) 9 Page - STMicroelectronics |
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AN4031 数据表(HTML) 9 Page - STMicroelectronics |
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9 / 36 page  DocID022648 Rev 1 9/36 AN4031 DMA controller description 35 Table 4 andTable 5 show the possible configurations of DMA streams/channels versus peripheral requests for STM32F401 products. Table 3. DMA2 request mapping Peripheral requests Stream 0 Stream 1 Stream 2 Stream 3 Stream 4 Stream 5 Stream 6 Stream 7 Channel 0 ADC1 SAI1_A(1) TIM8_CH1 TIM8_CH2 TIM8_CH3 SAI1_A(1) ADC1 SAI1_B(1) TIM1_CH1 TIM1_CH2 TIM1_CH3 - Channel 1 - DCMI ADC2 ADC2 SAI1_B(1) SPI6_TX(1) SPI6_RX(1) DCMI Channel 2 ADC3 ADC3 - SPI5_RX(1) SPI5_TX(1) CRYP_OUT CRYP_IN HASH_IN Channel 3 SPI1_RX - SPI1_RX SPI1_TX - SPI1_TX - - Channel 4 SPI4_RX(1) SPI4_TX(1) USART1_RX SDIO - USART1_RX SDIO USART1_TX Channel 5 - USART6_RX USART6_RX SPI4_RX(1) SPI4_TX(1) - USART6_TX USART6_TX Channel 6 TIM1_TRIG TIM1_CH1 TIM1_CH2 TIM1_CH1 TIM1_CH4 TIM1_TRIG TIM1_COM TIM1_UP TIM1_CH3 - Channel 7 - TIM8_UP TIM8_CH1 TIM8_CH2 TIM8_CH3 SPI5_RX(1) SPI5_TX(1) TIM8_CH4 TIM8_TRIG TIM8_COM 1. These requests are available on STM32F42xx and STM32F43xx only. Table 4. DMA1 request mapping for STM32F401 Peripheral requests Stream 0 Stream 1 Stream 2 Stream 3 Stream 4 Stream 5 Stream 6 Stream 7 Channel 0 SPI3_RX - SPI3_RX SPI2_RX SPI2_TX SPI3_TX - SPI3_TX Channel 1 I2C1_RX I2C3_RX - - - I2C1_RX I2C1_TX I2C1_TX Channel 2 TIM4_CH1 - I2S3_EXT_R X TIM4_CH2 I2S2_EXT_TX I2S3_EXT_TX TIM4_UP TIM4_CH3 Channel 3 I2S3_EXT_RX TIM2_UP TIM2_CH3 I2C3_RX I2S2_EXT_R X I2C3_TX TIM2_CH1 TIM2_CH2 TIM2_CH4 TIM2_UP TIM2_CH4 Channel 4 -- - - - USART2_RX USART2_TX - Channel 5 -- TIM3_CH4 TIM3_UP - TIM3_CH1 TIM3_TRIG TIM3_CH2 - TIM3_CH3 Channel 6 TIM5_CH3 TIM5_UP TIM5_CH4 TIM5_TRIG TIM5_CH1 TIM5_CH4 TIM5_TRIG TIM5_CH2 I2C3_TX TIM5_UP - Channel 7 -- I2C2_RX I2C2_RX --- I2C2_TX |
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