The USB20SR is a USB 2.0 Device, Software based enumeration RAM Interface IP Core. The core is RAM based with 32-bit Avalon interface and supports ULPI interface and Software Enumeration. It supports both High Speed (480 Mbps) and Full Speed (12 Mbps) functionality along with three preconfigured endpoints Control, IN, and OUT. It can be configurable up to 15 IN/OUT endpoints on customer request on chargeable basis. Each configurable endpoint has an endpoint controller that supports interrupt, bulk, and isochronous transfers.