Invention Grant
- Patent Title: Method and apparatus for clock and data recovery
- Patent Title (中): 时钟和数据恢复的方法和装置
-
Application No.: US13898806Application Date: 2013-05-21
-
Publication No.: US09032274B2Publication Date: 2015-05-12
- Inventor: Shadi M. Barakat , Bhuvanachandran K. Nair , Paul-Hugo Lamarche
- Applicant: Advanced Micro Devices, Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: Advanced Micro Devices, Inc.
- Current Assignee: Advanced Micro Devices, Inc.
- Current Assignee Address: US CA Sunnyvale
- Main IPC: H03M13/00
- IPC: H03M13/00 ; G01R31/28 ; G06F11/00 ; H04L7/00 ; H04L1/12 ; H04L1/24 ; H04L25/14 ; G11C29/02 ; H04L7/033 ; H04L7/10

Abstract:
A multi-link input/output (I/O) interface uses both feed-forward and feedback signaling to reduce the impact of noise on data capture at a memory controller. To transfer data from a source module to a destination module, a defined pattern is communicated from the memory module along a master channel concurrent with the memory module providing data via one or more slave channels. Based on the phase of the defined pattern as it is received, the multi-link I/O interface feeds forward to the slave channels control signaling whose phase reflects a predicted noise pattern for the system. Each slave channel performs CDR by adjusting timing of its corresponding capture clock signal based on the fed forward control signaling and based on feedback signaling for the corresponding slave channel, whereby the feedback signaling reflects an error measurement between a phase of a capture clock signal and transitions in received data.
Public/Granted literature
- US20140229785A1 Method and apparatus for clock and data recovery Public/Granted day:2014-08-14
Information query
IPC分类: