Invention Grant
- Patent Title: Method and apparatus for operating programmable clock divider using reset paths
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Application No.: US16398644Application Date: 2019-04-30
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Publication No.: US10742220B1Publication Date: 2020-08-11
- Inventor: Venkata N. S. N. Rao , Majid Jalali Far
- Applicant: Synopsys, Inc.
- Applicant Address: US CA Mountain View
- Assignee: Synopsys, Inc.
- Current Assignee: Synopsys, Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Fenwick & West LLP
- Main IPC: H03K23/66
- IPC: H03K23/66 ; H03K21/38 ; H03K21/02

Abstract:
A programmable clock divider having reset circuits configured to receive a DP count comprises a first flip-flop having a clock input, a first output, and one of the DP inputs configured to receive a clock signal, a plurality of flip-flops connected to form a ripple counter configured to each receive a DP input, a clock input, and a reset input to provide a first output coupled to the clock input of a subsequent flip-flop of the plurality of flip-flops, each subsequent flip-flop having its clock input coupled to the first output of the preceding flip-flop, a first reset circuit coupled to the flip-flops configured to provide an out signal in response to the flip-flops obtaining the DP count, and a second reset circuit configured to provide a reset signal to the reset input of the plurality of flip-flops in response to the out signal from the first reset circuit.
Information query
IPC分类: