This document specifies a command set used to control consumer electronic audio/video equipment. The command set builds upon an extensive body of standards work, underway and completed, as referenced in section 2. IEEE 1394.0, an IEEE standard, is the digital interface used to transport commands from controllers to AV devices (targets) and to return responses to the controllers. The unit architectures of these AV devices are defined within the scope of the configuration ROM and CSR architecture standardized by ISO/IEC. The commands themselves are encapsulated within a generic Function Control Protocol (FCP) developed by the HD Digital VCR Conference and now proposed as an IEC standard.