Invention Grant
US07773713B2 Clock data recovery systems and methods for direct digital synthesizers
有权
用于直接数字合成器的时钟数据恢复系统和方法
- Patent Title: Clock data recovery systems and methods for direct digital synthesizers
- Patent Title (中): 用于直接数字合成器的时钟数据恢复系统和方法
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Application No.: US11584410Application Date: 2006-10-19
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Publication No.: US07773713B2Publication Date: 2010-08-10
- Inventor: Nicholas G. Cafaro , Robert E. Stengel
- Applicant: Nicholas G. Cafaro , Robert E. Stengel
- Applicant Address: US IL Schaumburg
- Assignee: Motorola, Inc.
- Current Assignee: Motorola, Inc.
- Current Assignee Address: US IL Schaumburg
- Main IPC: H03D3/24
- IPC: H03D3/24
Abstract:
A system and method for clock data recovery for programming direct digital synthesizers is disclosed. A counter is used to calculate a coarse measurement of the clock frequency of a received digital signal, and a tap delay line is used to calculate a fine measurement of the clock frequency of the received digital signal. The coarse and fine measurements are used to calculate a value for programming a direct digital synthesizer to produce a clock signal that is an approximate replica of the clock frequency of the received digital signal.
Public/Granted literature
- US20080095291A1 Clock data recovery systems and methods for direct digital synthesizers Public/Granted day:2008-04-24
Information query
IPC分类:
