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STM32F217VG 数据表(PDF) 156 Page - STMicroelectronics |
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STM32F217VG 数据表(HTML) 156 Page - STMicroelectronics |
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156 / 173 page ![]() Application block diagrams STM32F21xxx 156/173 Doc ID 17050 Rev 8 A.4 USB OTG high speed (HS) interface solutions Figure 86. OTG HS (high speed) device connection, host and dual-role in high-speed mode with external PHY 1. It is possible to use MCO1 or MCO2 to save a crystal. It is however not mandatory to clock the STM32F21x with a 24 or 26 MHz crystal when using USB HS. The above figure only shows an example of a possible connection. 2. The ID pin is required in dual role only. DP STM32F20xxx DM VBUS VSS DM DP ID(2) USB USB HS OTG Ctrl FS PHY ULPI High speed OTG PHY ULPI_CLK ULPI_D[7:0] ULPI_DIR ULPI_STP ULPI_NXT not connected connector MCO1 or MCO2 24 or 26 MHz XT(1) PLL XT1 XI ai16036c |
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