Abstract: To provide a power supplying control apparatus, a power supplying apparatus, and a power supplying control method which control power supply appropriately. A power supplying apparatus according to the present embodiment is equipped with a plurality of ports corresponding to a USB (Universal Serial Bus) PD (Power Delivery) standard, a plurality of electric power supplying circuits which are provided corresponding to the ports and supply power to power receiving devices coupled to the ports, and a controller which holds a table of power profiles to which power receiving capabilities for each power receiving device are set, and controls the electric power supplying circuits, based on the table in such a manner that total supply power supplied from the electric power supplying circuits does not exceed a prescribed value.

Abstract: To provide a power supplying control apparatus, a power supplying apparatus, and a power supplying control method which control power supply appropriately. A power supplying apparatus according to the present embodiment is equipped with a plurality of ports corresponding to a USB (Universal Serial Bus) PD (Power Delivery) standard, a plurality of electric power supplying circuits which are provided corresponding to the ports and supply power to power receiving devices coupled to the ports, and a controller which holds a table of power profiles to which power receiving capabilities for each power receiving device are set, and controls the electric power supplying circuits, based on the table in such a manner that total supply power supplied from the electric power supplying circuits does not exceed a prescribed value.

Abstract: A device controller, a peripheral device, and a power control method that enable buffers to be used efficiently and that enable power control to be performed on the basis of data amounts accumulated in the buffers are provided. A novel device controller includes an input buffer for accumulating data output from a host device, an output buffer for accumulating data output to the host device, a data communication section for transferring data between the input and output buffers and the host device, and a data buffer control section for modifying buffer allocation amounts to the input and output buffers on the basis of the data amount accumulated in at least one of the input and output buffers. The data buffer control section causes the data communication section to transition from a normal power consumption mode to a low power consumption mode when the data amount reaches a predetermined value.

Abstract: A device controller, a peripheral device, and a power control method that enable buffers to be used efficiently and that enable power control to be performed on the basis of data amounts accumulated in the buffers are provided. A novel device controller includes an input buffer for accumulating data output from a host device, an output buffer for accumulating data output to the host device, a data communication section for transferring data between the input and output buffers and the host device, and a data buffer control section for modifying buffer allocation amounts to the input and output buffers on the basis of the data amount accumulated in at least one of the input and output buffers. The data buffer control section causes the data communication section to transition from a normal power consumption mode to a low power consumption mode when the data amount reaches a predetermined value.