Complex Digital System On Chip Technology

Due to the development of 1C technology,now a complex system can be integrated in a chip called system on chip(SoC).The design of SoC needs new design methodologys and modeling tools.SystemC is an open C++ modeling platform promoted by the Open SystemC Initiative ,which consists of a well defined set of C++ classes and a simulation kernel,supporting design abstractions at the register-transfer, behavioral,and system levels.The advantages of SystemC include the ability for hardware-software co-design,the ability to exchange IP easily and efficiently,and the ability to reuse test benches across different levels of modeling abstraction.Firstly,a Top-Down design methodology based on SystemC is presented.The methodology is based on four system abstract models:Function Model,Transcation Model,Communication Model and Implementation Model.A CSMA/CD MAC protocol concrete example is presented to verify it,and Its advantages and disadvantages are also evaluated.Finally,the method for translating a SystemC source into an equivalent VHDL program is discussed.With the aided tools Lex and Yacc,a prototype of SystemC-VHDL translation system is implemented.