公开(公告)号：US10209755B2

公开(公告)日：2019-02-19

申请号：US15419293

申请日：2017-01-30

Applicant: ARM Limited

Inventor： David Walter Flynn ,  Vasan Venkataraman

IPC: G06F1/22 ,  G06F1/32 ,  H04W52/02 ,  G06F1/26

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：US10588087B2

公开(公告)日：2020-03-10

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 ,  G06F1/32

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.