公开(公告)号：US20180217648A1

公开(公告)日：2018-08-02

申请号：US15419293

申请日：2017-01-30

Applicant: ARM Limited

Inventor： David Walter FLYNN ,  Vasan VENKATARAMAN

IPC: G06F1/26 ,  G06F1/32

CPC classification number: G06F1/266 ,  G06F1/3287 ,  G06F1/3296 ,  H04W52/0209 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162

Abstract: A system comprises a first domain 4 and second domain 6 which communicate via an interface 8. The first domain 4 transmits power state commands to the second domain 6 for controlling transitions of power states at the second domain 6. The power state commands include at least a power up command 50 for triggering a transition to a power up state and a power no-operation command 52 in response to which the second domain remains in the current one of the power states. The no-operation command 52 enables the second domain 6 to be left in either the power up state or a different power state even if the first domain 4 is powered down.

公开(公告)号：US20180343619A1

公开(公告)日：2018-11-29

申请号：US15989272

申请日：2018-05-25

Applicant: Arm Limited

Inventor： Edgar H. CALLAWAY, Jr. ,  Vasan VENKATARAMAN

IPC: H04W52/02 ,  H04W4/80

Abstract: A communications system and method provide power-saving while maintaining required protocol timing resolution. In a communication system that requires a high-frequency, high-precision, but high-power, clock source to meet timing requirements, selective disablement and re-enablement of the high-frequency clock provides for both timing precision and power reduction in the system.

公开(公告)号：US20160026202A1

公开(公告)日：2016-01-28

申请号：US14839144

申请日：2015-08-28

Applicant: ARM Limited

Inventor： Vasan VENKATARAMAN ,  Daniel Lewis CROSS ,  Edgar H. CALLAWAY, JR.

IPC: G05F1/66 ,  G05B15/02

CPC classification number: G05F1/66 ,  G01R31/3693 ,  G01R31/40 ,  G05B15/02 ,  H02J1/14

Abstract: A method, apparatus, and device provide for the detection of the adequacy of the current sourcing capability of a power source. The current sourcing capability of the power source is dynamically detected by sampling comparison values obtained during one or more sampling sub-windows and determining a sample density of comparison values. In response to the sample density of comparison values crossing a selectable density threshold, an insufficient-supply indication is generated.