Drawing on the collective experience of SoC designers and EDA tool vendors with the standard for IP core interfaces, or "sockets," the Open Core Protocol International Partnership has released version 2.0 of the OCP Specification. It includes a model for write transfers that provides for precise end-to-end responses, an enhanced burst model for both burst length and packet-style transfers, support for specification of endian-ness, and support for user-defined in-band command data and response extensions that support features such as parity and error-correction codes. EDA vendors and IP suppliers are already developing tools and products. Download the spec at www.ocpip.org.