Power Management for IEEE 1394 Devices

All devices on the IEEE 1394 bus must comply with the power management requirements outlined in this section.

37. Devices and controllers comply with Cable Power Distribution specification
Required

The cable power distribution model has been defined to provide guidelines for implementation of devices that propagate, source, or sink cable power. Thus, all devices must satisfy power distribution requirements. 1394 Trade Association Power Specification Part 1: Cable Power Distribution addresses interoperability and power distribution necessary for operation of both power-managed bus configurations and, with some restrictions, unmanaged bus configurations.

38. Devices and controllers comply with IEEE 1394 power specification
Required

Power-management CSRs and protocols provide an enhanced Plug and Play experience for end users. All devices must support power-state, power-capabilities, and power-status commands as defined in 1394 Specification for Power Management. Cable-power devices must support the notification request protocol. Wake-up and battery-status CSRs are optional but strongly recommended.