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→USB design rules
=== USB design rules===
* For USB data lines: USB1 (USBH_DM (29) and USBH_DP (31)) and USB0 (USBOTG_DM (35) and USBOTG_DP (37))
**Maintain symmetry and isolate differential pairs from nearby signals and circuitry to mantain the signal integrity.
* VBUS overcurrent protection: USB power source current must not be pass 500mA, you should apply a protection into the baseboard. IGEP AQUILA EXPANSION Public Schematic proposes a solution using TPS2051D IC.
