Download Co-Design for System Acceleration: A Quantitative Approach by Nadia Nedjah PDF

By Nadia Nedjah

This publication is worried with learning the co-design method often, and the way to figure out the better interface mechanism in a co-design procedure specifically. this can be in accordance with the features of the appliance and people of the objective structure of the process. instructions are supplied to help the designer's collection of the interface mechanism. a few new developments in co-design and process acceleration also are brought.

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Once the timing requirements for the first cycle are met, cas becomes inactive, while ras remains low. The second cas active transition, while ras is low, initiates the first page mode cycle. The dynamic RAM design is based on capacitor charge storage for each bit in the array. Thus each bit must be periodically refreshed to maintain the correct bit state. The refresh is accomplished by cycling through the 512 row addresses in sequence within the specified refresh time. All the bits on a row are refreshed simultaneously when the row is addressed.

The microcontroller now implements the following protocol, which includes resetting the iack di at the same time as unasserting copro st: start (); {sets copro_st = 1} wait_for_int (); {stops the CPU} ack_stop (); {sets copro_st = 0 and iack_di = 0} Parameter passing is achieved via memory-mapped registers located in the coprocessor. 1). Moreover, the bus interface controls the coprocessor memory accesses. 3) requesting the bus. 1). The interrupt controller is implemented by the bus interface too, which detects the end of the coprocessor operation and asserts the corresponding interrupt request signal.

The configuration data is, then, translated into an initialized C array. Software compilation stage accepts the modified C source program and translates it into machine code to be executed by the co-design system. The run-time system consists of the necessary hardware to download the modified C code into the development hardware, execute it and return performance statistics. 1 Hardware/Software Profiling Hardware/software profiling permits the identification of performance critical regions in the C source program.

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