关键词: 边界扫描链, 边界扫描寄存器, 性能分析, 优化设计, 仿真, 数据流

Abstract: The circuit models of boundary scan chain (BSC) and boundary scan register (BSR) are discussed. The circuit structure and working theory are analyzed, including several key control signals, in order to provide theoretical support for the optimization of structural design. Based on this situation, a few of design methods of DesignWare BSR circuits of Synopsys are mainly discussed. The way of simulation based on boundary scan is explained. Test data flows in circuits under the simulation of both output function and input function are analyzed separately. The data flows under two functional simulations are combined together for realizing optimized design of circuit structure. The performance analysis of BSR circuits mentioned above is implemented for parameters including gate number, area, delay and quiescent dissipation. The most optimized BSC circuit model is constructed according to optimized BSR circuits.

Key words: boundaryscanchain, boundaryscanregister, performanceanalysis, optimizeddesign, simulation, dataflow