专利名称：IQ-skew adaptation for a symmetric eye in a
SerDes receiver
发明人：Amaresh Malipatil,Sunil Srinivasa,Vladimir
Sindalovsky,Mark Trafford
申请号：US14340517
申请日：20140724
公开号：US09172526B1
公开日：
20151027its alright
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专利附图：
摘要：Described embodiments provide for, in a receiver circuit, an adaptation process that adjusts the IQ-skew automatically to obtain proper eye centering in a data eye,
thereby maximizing horizontal margin of the eye. The IQ-skew adaptation algorithm is realized with a ‘biased’ bang-bang phase detector (BBPD) oof a clock and data recovery circuit (CDR) that biases the weights applied to UP and DOWN outputs of the phase detector, rather than treating them equally. By weighting the BBPD UPs and DOWNs differently, the system locks to the left and right inner corners, and thereby is able to locate the center of the inner eye.
申请人：LSI Corporation
地址：San Jose CA US
国籍：US
代理机构：Sheridan Ross P.C.
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