Biography
Enrollment Date: 2005
Graduation Date：2008
Degree：M.S.
Defense Date：2008.05.31
Advisors：Chun Zhang
Department：Institute of Microelectronics，Tsinghua University
Title of Dissertation/Thesis：Power Optimization of CIDSP And Power analysis of the chip
Abstract:
Abstract The profoundly deaf patients cannot resort to the hearing aid, however, cochlear implant, which is proved to be effectively, can help them to restore hearing. Cochlear implant can deliver electrical stimulus to auditory nerve directly and provide the sensation of sound to those who are profoundly deaf. It is a progeny of the combination of neurophysiology, psychology and electronics. Our research group presents a Cochlear Implant System which adopts a low power DSP. Based on the DSP prototype — CIDSP (Cochlear Implant DSP), low power design, verification, test and power analysis are completed in this thesis. Through investigating the application of low power techniques in ASIC design, clock-gating, operand isolation and low power cell synthesis are used for CIDSP in this thesis. Combinating above three low power techniques, the power of CIDSP is reduced by 34.3% and the area increased only 7.9% only. Standard-cell ASIC design flow is used to design CIDSP. In order to insure the success of the tapeout, simulation verification, formality verification, static time verification and FPGA verification are adopted to verify the CIDSP design. After the first silicon success, Auto Test Equipment and demonstration system are used to test the chip of CIDSP. ASIC design is very closely related to library and process, but the improvement of the library and the update of process take a long period. In order to estimate the accurate power of the chip undering the same library and process as the CIDSP, actual power modeling which establish the relationship between simulation power and actual power is completed in this thesis and can be the basis for advanced research. Keywords: Cochlear Implant System CIDSP Low Power Verification and Chip Test Power Modeling