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CD00237391 Datasheet(PDF) 159 Page - STMicroelectronics |
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CD00237391 Datasheet(HTML) 159 Page - STMicroelectronics |
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159 / 177 page  STM32F20xxx Application block diagrams Doc ID 15818 Rev 9 159/177 Figure 88. OTG FS (full speed) connection dual-role with internal PHY 1. External voltage regulator only needed when building a VBUS powered device. 2. The current limiter is required only if the application has to support a VBUS powered device. A basic power switch can be used if 5 V are available on the application board. 3. The ID pin is required in dual role only. 4. The same application can be developed using the OTG HS in FS mode to achieve enhanced performance thanks to the large Rx/Tx FIFO and to a dedicated DMA controller. STM32F20xxx VDD VBUS DP VSS PA9 PA12 PA11 DM GPIO+IRQ GPIO EN Overcurrent 5 V Pwr 5 V to VDD voltage regulator (1) VDD I D (3) PA10 OSC_IN OSC_OUT ai17294c Current limiter power switch(2) |
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