The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 12, 2019
Filed:
Jun. 30, 2016
Cadence Design Systems, Inc., San Jose, CA (US);
Guangxi Ying, Beijing, CN;
Zhehong Qian, Shanghai, CN;
Liang Huo, Beijing, CN;
Yanjuan Zhan, Beijing, CN;
Cadence Design Systems, Inc., San Jose, CA (US);
Abstract
A method to initiate Command Address (CA) training on High Memory Bandwidth is provided to optimize CA bus setup and hold times relative to the memory clock. HBM protocol does not define any way to support CA training, but defines a very high working frequency. The high frequency makes it very difficult to ensure the timing on CA Bus-Row/Column command bus and CKE. As such, executing CA training before any normal operation is necessary to ensure the best setup/hold timings. The CA training takes advantage of protocol based instructions to initialize and implement CA training.