Microchip USB2422 Hardware Design Checklist

This document is a hardware design checklist for the Microchip USB2422, intended for use in new designs. It outlines essential checklist items that should be adhered to when implementing the USB2422. The document is structured into several sections, beginning with general considerations, which include required references and pin checks. It emphasizes the importance of connecting ground pins to a solid ground plane and using USB-IF certified connectors for compliance. The power section details the necessary connections for the analog supplies and decoupling capacitors. The USB signals section describes the pin configurations for the USB PHY interface, including upstream and downstream connections. Additional guidelines for USB protection and the use of external circuitry are provided to enhance ESD protection. The document also covers upstream and downstream port configurations, including VBUS connections and power control mechanisms. Overall, it serves as a comprehensive guide for engineers designing with the USB2422.