公开(公告)号：US20210157762A1

公开(公告)日：2021-05-27

申请号：US16924428

申请日：2020-07-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： JEAYOUNG KWON ,  KYUNGHUN KIM ,  NAMHOON KIM

IPC: G06F13/42 ,  G06F13/40 ,  G06F13/38 ,  G06F1/26 ,  G06F1/3215 ,  G06F1/08

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 initializing modes based on the USB type information and the USB version information, selects clock signals having frequencies in a range within a maximum power level, and performs an initializing operation based on the selected clock signals within an internal reference time interval.

公开(公告)号：US20210157385A1

公开(公告)日：2021-05-27

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 ,  G06F13/42 ,  G06F9/30

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.