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+# Note
+
+## Support Chip List
+
+### BouffaloLab
+
+- BouffaloLab BL616/BL808
+
+### HPMicro
+
+- HPM all series
+
+### AllwinnerTech
+
+- F133
+
+### Nuvoton
+
+- Nuvoton all series
+
+## Before Use
+
+Your should implement `usb_hc_low_level_init`.
+- Enable USB PHY、USB clock and set USB clock for 48M.
+- Enable usb irq
+- Config EHCI BASE and other macros in `cherryusb_config_tempate.h`
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