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:
Dec. 04, 2001
Filed:
May. 07, 1997
Shahin Hedayat, San Ramon, CA (US);
Surendra Mandava, San Jose, CA (US);
Cirrus Logic, Inc., Austin, TX (US);
Abstract
A novel multi-DSP system allows a main DSP to operate concurrently with an auxiliary DSP for implementing a filter algorithm. The main DSP and auxiliary DSP have separate program memories but share the same data memory. The auxiliary DSP program memory is mapped to the main DSP program memory to allow the main DSP to download filter process instructions from its program memory into the auxiliary DSP program memory. The auxiliary DSP fetches the instructions from its program memory to execute them. The auxiliary DSP is prevented from access to the shared data its program memory when this memory is occupied by the main DSP. An arbitration mechanism gives the auxiliary DSP access to the data memory only when the main DSP is not using this memory.