发明授权
US07362840B2 Circuit and method for adjusting timing alignment using programmable codes
有权
使用可编程代码调整定时对准的电路和方法
- 专利标题: Circuit and method for adjusting timing alignment using programmable codes
- 专利标题(中): 使用可编程代码调整定时对准的电路和方法
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申请号: US10990367申请日: 2004-11-18
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公开(公告)号: US07362840B2公开(公告)日: 2008-04-22
- 发明人: Terence L. Johnson , Timothy R. Miller , Nitin Sharma
- 申请人: Terence L. Johnson , Timothy R. Miller , Nitin Sharma
- 申请人地址: US TX Austin
- 专利权人: Freescale Semiconductor Inc.
- 当前专利权人: Freescale Semiconductor Inc.
- 当前专利权人地址: US TX Austin
- 主分类号: H04L7/00
- IPC分类号: H04L7/00 ; H04L25/00 ; H04L25/40
摘要:
A method is provided for adjusting timing alignment in which a receiver generates a plurality of imbalanced correction codes (1310), and square waves both having the same frequency. The receiver mixes the imbalanced correction codes with the square waves to create a mixed signal (1320), and integrates the mixed signal over a correction code period to generate a signal power value (1330). The receiver adjusts a phase of the square wave in a first direction when the signal power value satisfies a first criterion (1340, 1350), and in a second direction when the signal power value satisfies a second criterion (1340, 1360). Each imbalanced correction code is symmetrical. And a total integrated value of one of the imbalanced correction codes over the correction code period is either above a first threshold, or below a second threshold, the first threshold being greater than or equal to the second threshold.
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