Invention Application
- Patent Title: SERIAL DATA RECEIVER WITH SAMPLING CLOCK SKEW COMPENSATION
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Application No.: US16528518Application Date: 2019-07-31
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Publication No.: US20210036707A1Publication Date: 2021-02-04
- Inventor: Jaeduk Han , Wenbo Liu , Wing Liu , Ming-Shuan Chen , Sanjeev K. Maheshwari , Vishal Varma , Sunil Bhosekar , Lizhi Zhong , Gary A. Rogan
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Main IPC: H03L7/081
- IPC: H03L7/081 ; H03L7/08

Abstract:
An apparatus includes a receiver buffer, a phase compensation circuit, a data sampler circuit, and an error sampler circuit. The receiver buffer may generate an equalized signal on a signal node using an input signal received via a channel. The phase compensation circuit may, in response to an initiation of a training mode, replace the equalized signal on the signal node with a reference signal. The data sampler circuit may sample, using a data clock signal, the reference signal to generate a plurality of data samples. The error sampler circuit may sample, using an error clock signal, the reference signal to generate a plurality of errors samples. The phase compensation circuit may also adjust a phase difference between the data clock signal and the error clock signal using at least some of the plurality of data samples and at least some of the plurality of error samples.
Public/Granted literature
- US10972107B2 Serial data receiver with sampling clock skew compensation Public/Granted day:2021-04-06
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