Resources Contact Us Home

Image Number 18 for United States Patent #6658578.

A processor (100) is provided that is a programmable fixed point digital signal processor (DSP) with variable instruction length, offering both high code density and easy programming. Architecture and instruction set are optimized for low power consumption and high efficiency execution of DSP algorithms, such as for wireless telephones, as well as pure control tasks. The processor includes an instruction buffer unit (106), a program flow control unit (108), an address/data flow unit (110), a data computation unit (112), and multiple interconnecting busses. Dual multiply-accumulate blocks improve processing performance. A memory interface unit (104) provides parallel access to data and instruction memories. The instruction buffer is operable to buffer single and compound instructions pending execution thereof. A decode mechanism is configured to decode instructions from the instruction buffer. The use of compound instructions enables effective use of the bandwidth available within the processor. A soft dual memory instruction can be compiled from separate first and second programmed memory instructions. Instructions can be conditionally executed or repeatedly executed. Bit field processing and various addressing modes, such as circular buffer addressing, further support execution of DSP algorithms. The processor includes a multistage execution pipeline with pipeline protection features. Various functional modules can be separately powered down to conserve power. The processor includes emulation and code debugging facilities with support for cache analysis.

  Recently Added Patents
Identification of biomarkers in biological samples and methods of using same
Compact multi-functional scanning apparatus with retractable flatbed scanner
Method for conformal plasma immersed ion implantation assisted by atomic layer deposition
N-phenyl-(homo)piperazinyl-benzenesulfonyl or benzenesulfonamide compounds suitable for treating disorders that respond to the modulation of the serotonin 5-HT.sub.6 receptor
Application authentication system and method
Generation of uniform fragments of nucleic acids using patterned substrates
Flash drive
  Randomly Featured Patents
Multi-sweep method and system for mapping terrain with a weather radar system
Helmet closure
Angled-roller article-rotating belt conveyor
Reusable worker housing and methods relating thereto
System and method for tracking medical imaging quality
Sandjet rotating nozzle
Educational and/or therapeutic game set or similar article
Nonslip article support pad
Molded materials based on polycarbonates
Continuous production of gas diffusion electrodes