关键词: 查找表, 移位寄存器, 存储单元

Abstract: The design of shift register based on the lookup table is presented, configure static random access memory is used as the shift element, and the input signals of the lookup table are used as shift address selection signals. By controlling of the clock and write enable signal, the shift operation is performed. A lookup table is able to realize a 32 bit shift operation, and four lookup tables are able to be configured as four independent shifting register chains, or be configured as a 128 bit shifting register chain. Based on 28 nm process, the simulation and optimization are done, and the multi-project wafer is carried out. The test results match well with the simulation results, the 32×4 and 128×1 shift operation are realized, and the maximum operation clock frequency is 500 MHz. Compared with the reference chip, the performance is improved by 10%.

Key words: lookuptable, shiftregister, SRAM