Invention Grant
- Patent Title: No-enable setup clock gater based on pulse
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Application No.: US16862071Application Date: 2020-04-29
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Publication No.: US11258446B2Publication Date: 2022-02-22
- Inventor: Vivekanandan Venugopal , Shuyan Lei , Wenhao Li , Hemangi U. Gajjewar
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Kowert Hood Munyon Rankin and Goetzel PC
- Agent Rory D. Rankin
- Main IPC: H03K3/017
- IPC: H03K3/017 ; H03K5/04 ; H03K7/08 ; H03K19/094 ; H03K17/284 ; G06F1/10

Abstract:
Systems, apparatuses, and methods for implementing a high-performance clock-gating circuit are described. A first pull-down stack receives enable and pulse signals on gates of N-type transistors which pull down an output node when the enable and pulse signals are both high. A pull-up transistor coupled to the output node receives a clock signal which turns off the pull-up transistor when the clock signal is high. A first pull-up stack receives the inverted pulse signal and the enable signal on gates of P-type transistors to cause the output node to be high when the enable signal and inverted pulse signal are low. A second pull-up stack maintains a high voltage on the output node after the pulse event has ended but while the clock signal is still high. A second pull-down stack maintains a low voltage on the output node after the pulse event but while the clock remains high.
Public/Granted literature
- US20210344344A1 NO-ENABLE SETUP CLOCK GATER BASED ON PULSE Public/Granted day:2021-11-04
Information query
IPC分类: