公开(公告)号：US11181962B2

公开(公告)日：2021-11-23

申请号：US16922091

申请日：2020-07-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jeayoung Kwon ,  Kyunghun Kim ,  Minseok Kim ,  Youngkeun Oh

IPC: G06F1/3215 ,  G06F1/04 ,  G06F13/38 ,  G06F9/30 ,  G06F13/42

Abstract: A portable storage device includes nonvolatile memory devices to store data, a storage controller, and a bridge chipset. The bridge chipset is connected to a first connector of a host through a cable assembly, detects a resistance of the cable assembly, provides the storage controller with USB type information of the first connector based on the detected resistance, and after a USB connection is established with the host, provides the storage controller with USB version information associated with the established USB connection. The storage controller selects one of a plurality of operation modes based on the USB type information, the USB version information, and a request pattern indicating random or sequential access to the data from the host, selects clock signals having maximum frequencies in a range within a maximum power level associated with the selected operation mode, and performs power throttling based on the selected clock signals.