公开(公告)号：US10901479B1

公开(公告)日：2021-01-26

申请号：US16392168

申请日：2019-04-23

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Mark A. Boerger ,  David Viviescas ,  Yehuda Rokach ,  Mark Antilla

IPC: G06F1/28 ,  G06F1/32 ,  G06F1/3206 ,  G06F1/3212 ,  G06F1/3287 ,  G06F9/4401 ,  H04W88/02

Abstract: A battery operated portable communication device (100) provides improved power up of converged functionality managed by a power arbitration module (PAM) (104), a baseband processor (BP) (108), and an applications processor (AP) (104). In response to a control switch (120) being turned on, the baseband processor generates a time delay and asserts a boot-line to the applications processor which prevents full power up of the applications processor and during which a battery impedance is read, thereby preventing simultaneous power up of the AP and BP. The boot-line from the baseband processor to the applications processor is released once the BP power up is complete and battery impedance is read.

公开(公告)号：US20180067534A1

公开(公告)日：2018-03-08

申请号：US15258841

申请日：2016-09-07

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： David Viviescas ,  Chun P. Leung ,  Kirk B. Stuart

IPC: G06F1/32

CPC classification number: H03K17/22 ,  G06F1/26

Abstract: A system and method to determine a power-up parameter for a circuit board. The method includes electrically exciting a second-order circuit to generate an underdamped transient response. The method includes receiving, at a comparator coupled to the second-order circuit, the underdamped transient response. The method includes generating, in response to the underdamped transient response received at the comparator, a plurality of edges. The method includes receiving, at a single general purpose input/output pin of the electronic processor, the plurality of edges. The method includes determining a first response parameter based on a plurality of edges. The method includes determining a second response parameter based on the plurality of edges. The method includes determining the power-up parameter based on the first response parameter and the second response parameter.