Studies On Asynchronous Multiplier Design And Research Techniques Based On Macro Cell

Asynchronous circuit generated all the control of local clock signals using handshake protocol, replace the global clock signal of its synchronous circuit using interactive link. Compared with the synchronous circuit, the asynchronous circuits have the particular advantages in speed, power, performance, robustness ,reusability and many other aspects. Asynchronous integrated circuit design is becoming the research focus both at home and abroad.In this paper, it describes and completes the macro cell design flow and library generation methods. As the macro-cell can achieve much more complex than the standard cell features, the method can improve the design efficiency. The technology library involves the power, timing, capacitance extraction accuracy of each parameter and so on. The design and implementation of the C cell, for example, was simulated, parameter extraction, data collation also compiler the technology library in the HJTC Logic 0.25um process which make it one of the standard cell library macro cell. So, it can be convenient used for asynchronous control circuit.Based on the new asynchronous circuit design method, a 32-bit asynchronous multiplier is designed, which is composed of data part and control part. It can achieve sub-word parallelism, and then, the results can restore the original bit width difference. A redundant four-phase latch control(RFLC) protocol is presented and implemented in the control path. This agreement increases the efficiency of handshake protocol. However, the corresponding cost is the area. It is based on C-element circuit of the agreement to synthesis.