Invention Grant
- Patent Title: Integrated multi-channel receiver having independent clock recovery modules with enhanced inductors
-
Application No.: US15154567Application Date: 2016-05-13
-
Publication No.: US09667407B1Publication Date: 2017-05-30
- Inventor: Xike Liu , Kei Peng , Chan Ho Yeung , YiFei Dai , Lawrence (Chi Fung) Cheng , Runsheng He
- Applicant: Credo Technology Group Limited
- Applicant Address: KY Grand Cayman
- Assignee: CREDO TECHNOLOGY GROUP LIMITED
- Current Assignee: CREDO TECHNOLOGY GROUP LIMITED
- Current Assignee Address: KY Grand Cayman
- Agency: Iselin Law PLLC
- Main IPC: H04L7/00
- IPC: H04L7/00 ; H04B10/61

Abstract:
A multichannel receiver includes multiple receiver modules, each having: a voltage-controlled oscillator that generates a clock signal with a controllable frequency; a phase interpolator that applies a controllable phase shift to the clock signal to provide a sampling signal; a sampling element that produces a digital receive signal by sampling an analog receive signal in accordance with the sampling signal; a timing error estimator that operates on the digital receive signal to provide timing error estimates; a phase control filter that derives, from the timing error estimates, a phase control signal supplied to the phase interpolator, wherein the phase control signal minimizes a phase error between the sampling signal and the analog receive signal; and a frequency control filter that derives, from the timing error estimates, a frequency control signal for controlling the clock signal frequency, wherein the frequency control signal minimizes a frequency offset between the clock signal and the analog receive signal.
Information query