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
Acoustic reconfiguration devices and methods
Treatment of diabetes with milk protein hydrolysate
Zero-copy network and file offload for web and application servers
Adaptive period network session reservation
Heterocyclic compounds as CCR2B antagonists
Polyester resin for toner, electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming met
Inkjet ink
  Randomly Featured Patents
Ceiling fan
System and method for administering fixed index annuities
Body for a portable heater
Cable management assembly for cable clusters of network equipment
Pressurization of cement in bones
Manual cross fade learn feature for an audio follow video mixer
Assembly-in-place storage container for use behind the front seats of an extended cab truck
Laminated components of open magnetic circuit type
Method for producing a fluorine-containing compound
High reflection isolation device