FAST AND EFFECTIVE EMBEDDED SYSTEMS DESIGN

In this chapter, we examine one of the most important and widely used categories of operating systems: embedded operating systems. The embedded system environment places unique and demanding requirements on the OS and calls for design strategies quite different than that found in ordinary operating[r]

constraint{ }constraint { ltl G( ); }constraint { ltl G( ); }medium AbsMpeg implements MpegDecode FIGURE 10.5Multiple mapping netlists refining the same service to form a platform. (From Balarin, F. et al., IEEE Comput., 36, 45, April2003. With permission.)Nicolescu/Model-Based Design for [r]

H.264 encoder application in case of the first communication scheme, with allthe buffers mapped on the DXM memory. The first and the second columnsrepresent the correspondence between the different cores connected to theNoC and the NoC addresses. The third column represents the total n[r]

Secondly, wrapped components have to be interconnected. Even ifthe interfaces are exposed in a unified way, interconnecting them isnot usually a straightforward process. The data and the flow of controlbetween IP blocks must be exposed in such a way that the frameworkhas sufficient visibility[r]

The hardware–software interface has different views depending on thedesigner. Thus, for an application software designer, the hardware–softwareinterface represents a set of system call used to hide the underlying exe-cution platform, also called programming model. For a hardware designer,the hardwar[r]

The literature on system-level design and design-space exploration is vast.In the previous work, we presented a broad survey of numerous tools andmethodologies in the context of platform-based design [25], both from indus-try and academia, and categorized th[r]

Nicolescu/Model-Based Design for Embedded Systems 67842_C010 Finals Page 296 2009-10-2296 Model-Based Design for Embedded Systemsrelation (the mapping). The MIC is supported by a set of tools that can cre-ate and manage various modeling languages. For instan[r]

• Some application tasks will not be parallelizable; therefore, fastgeneral-purpose cores will be necessary to support these.As a result, we believe that a performance and power effective platform forthe consumer-dominated convergence platforms will be composed of a het-erogeneous comp[r]

well.An aspect of the model that is extremely difficult, if not impossible, to val-idate is the wireless communication. Simulation of wireless MANET systemsis notoriously difficult (e.g., see [3]). The effects of multipath propagation,fading, and external disturbances are very difficult to mo[r]

As semiconductor and communication technologies improve continuously,we can make very powerful embedded hardware by integrating many pro-cessing elements so that a system with multiple processing elements inte-grated in a single chip, called MPSoC (multiprocessor system on chip), isbec[r]

is not available. (From Kwon, S. et al., ACM Trans. Des. Autom. Electron. Syst.,13, Article 39, July 2008. With permission.)Nicolescu/Model-Based Design for Embedded Systems 67842_C008 Finals Page 220 2009-10-14220 Model-Based Design for Embedded Systemsreal-time s[r]

2C bus is modeled as aCAN bus with the transmission rate set to match the transmission rate of theI2Cbus.6.6.4 TrueTime Modeling of Radio CommunicationThe radio communication used by the Tmote Sky is the IEEE 802.15.4MAC protocol (the so-called Zigbee MAC protocol) and the correspond-ing True[r]

as usual.However, there is some complexity with regard to external I/O pins,since in many FPGA designs, the input/output buffer (IOB) primitives rep-resenting external I/O pins are not explicitly instantiated in a user design butare inferred in the synthesis process. Normally in a hierarchica[r]

References 37712.1 IntroductionIncreasingly, programmable logic (such as field programmable gate arrays[FPGAs]) is a critical part of low-power and high-performance signal pro-cessing systems. Typically, these systems also include a complex systemarchitecture, along with control[r]

waveforms through any device that the processor has access to, includinga wireless network connection based on an existing waveform supportingdata traffic.12.2.4 Reusable FPGA Platforms for Embedded SystemsTypically, the SRP concept is seen largely as a mechanism for enabling bet-ter use of t[r]

Nicolescu/Model-Based Design for Embedded Systems 67842_C012 Finals Page 376 2009-10-1376 Model-Based Design for Embedded Systems/{#address−cells = <1>; #size−cells = <1>;compatible = "xlnx,virtex";DDR2_SDRAM: memory@0 {device_typ[r]

dense-time model can express that two events a and b can occur arbitrarilyclose to each other, but not at the same time, using a “strict” constraint of theform x > 0. Whether to opt for a dense or discrete TA model depends onthe application at hand. Considerations need to take into acc[r]

transfers between successive processing blocks. The resulting com-munication bandwidth is application dependent and a large varietyof communication bandwidth is required. The size of the data itemsis application dependent (e.g., 14-bit samples for a sensor system, 6432-bit words for HiperLAN/[r]

to carry out architectural modeling and design-space exploration. Experi-mental results show that METRO II is capable of capturing functional mod-eling, architectural modeling, and mapping for a UMTS case study withlimited overhead as compared with a baseline SystemC model. We s[r]

tile operates quite autonomously. In a reconfigurable multicore archi-tecture, every processing core is configured independently. In fact, acore is a natural unit of partial reconfiguration. Unused cores can beconfigured for a new task, while at the same time other cores continueperforming their tas[r]