公开(公告)号：US20160241240A1

公开(公告)日：2016-08-18

申请号：US14622111

申请日：2015-02-13

Applicant: Apple Inc.

Inventor： Shingo Suzuki ,  Harsha Krishnamurthy ,  Edvin Catovic ,  Rajat Goel ,  Manoj Gopalan

IPC: H03K19/003 ,  H03K19/00

CPC classification number: H03K19/00361 ,  H03K19/0013 ,  H03K19/0016

Abstract: In an embodiment, an integrated circuit may include one or more power gated blocks and a power manager circuit. The power manager circuit may be configured to generate a block enable for each power gated block and a block enable clock. The power gated block may generate local block enables to various power switch segments in the power gated block. In particular, the power gated block may include a set of series-connected flops that receive the block enable from the power manager circuit. The power gated block may include a set of multiplexors (muxes) that provide the local block enables for each power switch segment. One input of the muxes is coupled to the block enable, and the other input is coupled to another enable propagated through one of the other power switch segments. Accordingly, the muxes may be controlled to select the propagated enables or the input block enable.

Abstract translation: 在一个实施例中，集成电路可以包括一个或多个电源门控块和功率管理器电路。 功率管理器电路可以被配置为为每个电源门控块和块使能时钟生成块使能。 电源门控块可以在电源门控块中产生各种电源开关段的本地块使能。 特别地，电源门控块可以包括从电源管理器电路接收块使能的一组串联的触发器。 功率门控块可以包括为每个功率开关段提供本地块使能的一组多路复用器（多路复用器）。 多路复用器的一个输入耦合到块使能，另一个输入耦合到通过其它功率开关段之一传播的另一个功能。 因此，可以控制多路复用器来选择传播的使能或输入块使能。

公开(公告)号：US09607125B1

公开(公告)日：2017-03-28

申请号：US14732971

申请日：2015-06-08

Applicant: Apple Inc.

Inventor： Antonietta Oliva ,  Karthik Rajagopal ,  Manoj Gopalan ,  Mini Nanua ,  Sambasivan Narayan

IPC: G06F17/50

CPC classification number: G06F17/5081 ,  G06F2217/76

Abstract: Embodiments of an electromigration (EM) check scheme to reduce a pessimism on current density limits by checking wire context. This methodology, in an embodiment, includes applying existing electronic design automation (EDA) flows and tools to identify potentially-failing wires based on a worst-case EM check using conservative foundry current density limits. A more accurate, context-specific check can be performed on the potentially-failing wires to eliminate one or more of the potentially-failing wires if those wires do not experience worst-case conditions and meet current density limits based on an actual context of those wires. A designer can correct remaining wires which are not eliminated by the context-specific check.

公开(公告)号：US09564898B2

公开(公告)日：2017-02-07

申请号：US14622111

申请日：2015-02-13

Applicant: Apple Inc.

Inventor： Shingo Suzuki ,  Harsha Krishnamurthy ,  Edvin Catovic ,  Rajat Goel ,  Manoj Gopalan

IPC: H03K19/003 ,  H03K19/00

CPC classification number: H03K19/00361 ,  H03K19/0013 ,  H03K19/0016

Abstract: In an embodiment, an integrated circuit may include one or more power gated blocks and a power manager circuit. The power manager circuit may be configured to generate a block enable for each power gated block and a block enable clock. The power gated block may generate local block enables to various power switch segments in the power gated block. In particular, the power gated block may include a set of series-connected flops that receive the block enable from the power manager circuit. The power gated block may include a set of multiplexors (muxes) that provide the local block enables for each power switch segment. One input of the muxes is coupled to the block enable, and the other input is coupled to another enable propagated through one of the other power switch segments. Accordingly, the muxes may be controlled to select the propagated enables or the input block enable.

Abstract translation: 在一个实施例中，集成电路可以包括一个或多个电源门控块和功率管理器电路。 功率管理器电路可以被配置为为每个电源门控块和块使能时钟生成块使能。 电源门控块可以在电源门控块中产生各种电源开关段的本地块使能。 特别地，电源门控块可以包括从电源管理器电路接收块使能的一组串联的触发器。 功率门控块可以包括为每个功率开关段提供本地块使能的一组多路复用器（多路复用器）。 多路复用器的一个输入耦合到块使能，另一个输入耦合到通过其它功率开关段之一传播的另一个功能。 因此，可以控制多路复用器来选择传播的使能或输入块使能。