Pub Date : 2008-06-15DOI: 10.1109/SNW.2008.5418398
Yeon-kug Moon, H. Seo, Kwang-Ho Won, Yong-Kuk Park, Myunghyun Yoon, Jun-Jae Yoo, Seong-Dong Kim
This paper describes a low-voltage and low-power channel selection analog front end with continuous-time low pass filters and highly linear programmable-gain amplifier (PGA). The filters were realized as balanced Gm-C biquadratic filters to achieve low current consumption. High linearity and constant wide bandwidth are achieved by using a new transconductance (Gm) cell. The PGA has a voltage gain varying from 0 to 65dB, while maintaining a constant bandwidth. A filter tuning circuit that requires an accurate time base but no external components is presented. With a 1-Vrms differential input and output, the filter achieves -85dB THD and a 78dB signal-to-noise ratio. Both the filter and PGA were implemented in a 0.18mum 1P6M n-well CMOS process. They consume 3.2mW from a 1.8V power supply and occupy an area of 0.19mm2
本文介绍了一种低电压、低功耗的通道选择模拟前端，它具有连续时间低通滤波器和高线性可编程增益放大器(PGA)。滤波器被实现为平衡的Gm-C双二次型滤波器，以实现低电流消耗。采用一种新型的跨导(Gm)电池，实现了高线性度和恒定宽带宽。PGA具有从0到65dB变化的电压增益，同时保持恒定的带宽。提出了一种需要精确时基但不需要外部元件的滤波器调谐电路。该滤波器采用1 vrms差分输入和输出，THD为-85dB，信噪比为78dB。滤波器和PGA均采用0.18 μ m 1P6M n阱CMOS工艺实现。它们从1.8V的电源中消耗3.2mW，占地0.19mm2
{"title":"A CMOS continuous-time Gm-C filter and programmable gain amplifier for WPAN receivers","authors":"Yeon-kug Moon, H. Seo, Kwang-Ho Won, Yong-Kuk Park, Myunghyun Yoon, Jun-Jae Yoo, Seong-Dong Kim","doi":"10.1109/SNW.2008.5418398","DOIUrl":"https://doi.org/10.1109/SNW.2008.5418398","url":null,"abstract":"This paper describes a low-voltage and low-power channel selection analog front end with continuous-time low pass filters and highly linear programmable-gain amplifier (PGA). The filters were realized as balanced Gm-C biquadratic filters to achieve low current consumption. High linearity and constant wide bandwidth are achieved by using a new transconductance (Gm) cell. The PGA has a voltage gain varying from 0 to 65dB, while maintaining a constant bandwidth. A filter tuning circuit that requires an accurate time base but no external components is presented. With a 1-Vrms differential input and output, the filter achieves -85dB THD and a 78dB signal-to-noise ratio. Both the filter and PGA were implemented in a 0.18mum 1P6M n-well CMOS process. They consume 3.2mW from a 1.8V power supply and occupy an area of 0.19mm2","PeriodicalId":431034,"journal":{"name":"2005 6th International Conference on ASIC","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126783998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-12-01DOI: 10.1109/ICASIC.2005.1611234
T. Kuroda
This paper describes power reduction techniques in high-speed inter-chip data communication with inductive coupled wireless interface for 3D-stacked SiP. NRZ signaling where signal is not transmitted when data holds reduces power dissipation in proportion to switching activity. A low-power single-end transmitter is presented for 55% transmitter's power reduction. Depending on communication distance, transmit power is controlled for both power and crosstalk reduction. 195Gb/s, 1.2W high-speed and low-power interface with these techniques has been demonstrated in 0.25mum CMOS
介绍了3d堆叠SiP中采用感应耦合无线接口实现高速片间数据通信的降功耗技术。NRZ信令，当数据保持时不传输信号，按比例减少功率损耗。提出了一种低功耗单端发射机，可将发射机功率降低55%。根据通信距离，控制发射功率以减少功率和串扰。采用这些技术的195Gb/s、1.2W高速低功耗接口已在0.25 μ m CMOS上得到验证
{"title":"Power reduction in high-speed inter-chip data communications","authors":"T. Kuroda","doi":"10.1109/ICASIC.2005.1611234","DOIUrl":"https://doi.org/10.1109/ICASIC.2005.1611234","url":null,"abstract":"This paper describes power reduction techniques in high-speed inter-chip data communication with inductive coupled wireless interface for 3D-stacked SiP. NRZ signaling where signal is not transmitted when data holds reduces power dissipation in proportion to switching activity. A low-power single-end transmitter is presented for 55% transmitter's power reduction. Depending on communication distance, transmit power is controlled for both power and crosstalk reduction. 195Gb/s, 1.2W high-speed and low-power interface with these techniques has been demonstrated in 0.25mum CMOS","PeriodicalId":431034,"journal":{"name":"2005 6th International Conference on ASIC","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128920597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-12-01DOI: 10.1109/ICASIC.2005.1611460
X. Xu, S. Kimura, K. Horikawa, T. Tsuchiya
Model checking can exhaustively verify a set of specified properties on a given implementation. However, it is very hard to determine whether sufficient properties have been specified or not. In this paper, we propose a transition traversal coverage method for a subset of CTL to evaluate the completeness of properties. With this method, we can detect the transitions which are not verified by any property. It is more comprehensive and accurate than state-based coverage metric. We avoid generating the perturbed implementation by directly traversing transitions based on the semantics of CTL formulas. Experimental results show that the proposed method can discover subtle coverage holes with low computation cost.
{"title":"Transition traversal coverage estimation for symbolic model checking","authors":"X. Xu, S. Kimura, K. Horikawa, T. Tsuchiya","doi":"10.1109/ICASIC.2005.1611460","DOIUrl":"https://doi.org/10.1109/ICASIC.2005.1611460","url":null,"abstract":"Model checking can exhaustively verify a set of specified properties on a given implementation. However, it is very hard to determine whether sufficient properties have been specified or not. In this paper, we propose a transition traversal coverage method for a subset of CTL to evaluate the completeness of properties. With this method, we can detect the transitions which are not verified by any property. It is more comprehensive and accurate than state-based coverage metric. We avoid generating the perturbed implementation by directly traversing transitions based on the semantics of CTL formulas. Experimental results show that the proposed method can discover subtle coverage holes with low computation cost.","PeriodicalId":431034,"journal":{"name":"2005 6th International Conference on ASIC","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126159205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-12-01DOI: 10.1109/ICASIC.2005.1611300
Yang Song, Zhenyu Liu, S. Goto, T. Ikenaga
A VLSI architecture for motion estimation/compensation interpolation in H.264/AVC is presented in this paper. Compared with previous work, this architecture has following characteristics: First, it supports all block modes and fractional samples adopted in H.264/AVC standard. Second, no extra initiation and finalization time is required, which enhances the system performance. Third, a pipelined finite impulse filter (FIR) is used to replace the traditional adder tree, which increases the system clock frequency. Because this design applies full pipelined architecture, it can generate one half sample in every cycle and eight quarter samples in every nine cycles with little pipeline latency. In fact, this architecture with minor revision could be adopted in MPEG-4 and other video coding standards. The design is implemented with TSMC 0.18/spl mu/m CMOS technology. The core area is 0.577/spl times/0.661mm/sup 2/ and frequency is 274MHz in typical condition (1.8V, 25/spl deg/C).
{"title":"A VLSI architecture for motion compensation interpolation in H.264/AVC","authors":"Yang Song, Zhenyu Liu, S. Goto, T. Ikenaga","doi":"10.1109/ICASIC.2005.1611300","DOIUrl":"https://doi.org/10.1109/ICASIC.2005.1611300","url":null,"abstract":"A VLSI architecture for motion estimation/compensation interpolation in H.264/AVC is presented in this paper. Compared with previous work, this architecture has following characteristics: First, it supports all block modes and fractional samples adopted in H.264/AVC standard. Second, no extra initiation and finalization time is required, which enhances the system performance. Third, a pipelined finite impulse filter (FIR) is used to replace the traditional adder tree, which increases the system clock frequency. Because this design applies full pipelined architecture, it can generate one half sample in every cycle and eight quarter samples in every nine cycles with little pipeline latency. In fact, this architecture with minor revision could be adopted in MPEG-4 and other video coding standards. The design is implemented with TSMC 0.18/spl mu/m CMOS technology. The core area is 0.577/spl times/0.661mm/sup 2/ and frequency is 274MHz in typical condition (1.8V, 25/spl deg/C).","PeriodicalId":431034,"journal":{"name":"2005 6th International Conference on ASIC","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124382578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-10-24DOI: 10.1109/ICASIC.2005.1611260
Gu Ming, Yang Jun, Xue Jun
This paper describes a low-power write scheme by adopting charge sharing technique. By reducing the bit lines voltage swing, the bit lines dynamic power is reduced. The memory cell's static noise margin (SNM) is discussed to prove it is a feasible scheme. Simulation results show compare to conventional SRAM, in write cycle this SRAM saves more than 20% dynamic power
{"title":"Low power SRAM design using charge sharing technique","authors":"Gu Ming, Yang Jun, Xue Jun","doi":"10.1109/ICASIC.2005.1611260","DOIUrl":"https://doi.org/10.1109/ICASIC.2005.1611260","url":null,"abstract":"This paper describes a low-power write scheme by adopting charge sharing technique. By reducing the bit lines voltage swing, the bit lines dynamic power is reduced. The memory cell's static noise margin (SNM) is discussed to prove it is a feasible scheme. Simulation results show compare to conventional SRAM, in write cycle this SRAM saves more than 20% dynamic power","PeriodicalId":431034,"journal":{"name":"2005 6th International Conference on ASIC","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115124857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-10-24DOI: 10.1109/ICASIC.2005.1611421
Wang Wei, Jianhui Jiang
This paper presents a more area-effective method to construct self-dual circuits. The experimental results based on ISCAS85 benchmark circuits show that the proposed method can considerably decrease hardware complexity on average. If the circuit has few primary input and primary output lines, the proposed method is superior when the circuit scale becomes larger.
{"title":"A novel method for the construction of self-dual circuits","authors":"Wang Wei, Jianhui Jiang","doi":"10.1109/ICASIC.2005.1611421","DOIUrl":"https://doi.org/10.1109/ICASIC.2005.1611421","url":null,"abstract":"This paper presents a more area-effective method to construct self-dual circuits. The experimental results based on ISCAS85 benchmark circuits show that the proposed method can considerably decrease hardware complexity on average. If the circuit has few primary input and primary output lines, the proposed method is superior when the circuit scale becomes larger.","PeriodicalId":431034,"journal":{"name":"2005 6th International Conference on ASIC","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115309201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-10-24DOI: 10.1109/ICASIC.2005.1611308
Chen Lei, Zhao Yuan-fu, Gao De-yuan, Wen Wu, Wang Zongmin, Z. Xiaofei, Peng Heping
The paper presents a novel lower power polyphase transformable stage nonrecursive comb (PTSNC) filter architecture considering the area and power consumption, which is very suitable for high-order oversampled sigma delta A/D converters. The proposed decimation filter has 1/3 less hardware and power compared to conventional non-recursive decimation filters when the filter was implemented using 0.6-mum CMOS standard when the circuit work clock was 100MHz
考虑到滤波器的面积和功耗，提出了一种适用于高阶过采样σ δ a /D转换器的低功率多相变换级非递归梳状滤波器(PTSNC)结构。当电路工作时钟为100MHz时，采用0.6 μ m CMOS标准实现该滤波器，与传统的非递归抽取滤波器相比，所提出的抽取滤波器的硬件和功耗减少了1/3
{"title":"A Modified ecimation ilter esign for Oversampled Sigma elta A/ Converters","authors":"Chen Lei, Zhao Yuan-fu, Gao De-yuan, Wen Wu, Wang Zongmin, Z. Xiaofei, Peng Heping","doi":"10.1109/ICASIC.2005.1611308","DOIUrl":"https://doi.org/10.1109/ICASIC.2005.1611308","url":null,"abstract":"The paper presents a novel lower power polyphase transformable stage nonrecursive comb (PTSNC) filter architecture considering the area and power consumption, which is very suitable for high-order oversampled sigma delta A/D converters. The proposed decimation filter has 1/3 less hardware and power compared to conventional non-recursive decimation filters when the filter was implemented using 0.6-mum CMOS standard when the circuit work clock was 100MHz","PeriodicalId":431034,"journal":{"name":"2005 6th International Conference on ASIC","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115351918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-10-24DOI: 10.1109/ICASIC.2005.1611270
Jae-Gon Lee, Woong Hwangbo, Seonpil Kim, C. Kyung
This paper describes top-down implementation of Rijndael, a new advanced encryption standard (AES), cipher for both encryption and decryption. Pipelined architecture was used to maximize the performance. The design started in the untimed functional level description in C. It was refined to behavioral-level design and finally to RTL design with SystemC. To overcome simulation performance degradation with RTL description, we adopted FPGA-based simulation accelerator in the final stage. To reuse the original test vectors, we introduced proxy module for interconnecting simulation environment with acceleration environment. This hides the presence of simulation accelerator from simulator and makes it possible to reuse test vectors of RTL simulation when simulation accelerator is present
{"title":"Top-down implementation of pipelined AES cipher and its verification with FPGA-based simulation accelerator","authors":"Jae-Gon Lee, Woong Hwangbo, Seonpil Kim, C. Kyung","doi":"10.1109/ICASIC.2005.1611270","DOIUrl":"https://doi.org/10.1109/ICASIC.2005.1611270","url":null,"abstract":"This paper describes top-down implementation of Rijndael, a new advanced encryption standard (AES), cipher for both encryption and decryption. Pipelined architecture was used to maximize the performance. The design started in the untimed functional level description in C. It was refined to behavioral-level design and finally to RTL design with SystemC. To overcome simulation performance degradation with RTL description, we adopted FPGA-based simulation accelerator in the final stage. To reuse the original test vectors, we introduced proxy module for interconnecting simulation environment with acceleration environment. This hides the presence of simulation accelerator from simulator and makes it possible to reuse test vectors of RTL simulation when simulation accelerator is present","PeriodicalId":431034,"journal":{"name":"2005 6th International Conference on ASIC","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115408813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-10-24DOI: 10.1109/ICASIC.2005.1611337
Wei Lan, Gao Jim, Chen Zhongjian, Ji Lijiu
A new structure of low-noise CMOS differential amplifier has been presented in this paper. The structure is mainly based on a load of common-gate MOSFETs with resistances in series at sources (CG-R load), which does not increase complication of the circuit. This structure decreases 1/f noise of the load by a (1 + g/sub m2/R) /sup 2/ coefficient, while keeps the voltage gain high. The simulation result for the given example reveals an average reduction of 90% for load noise at low frequencies, compared with current-mirror load (CM load).
{"title":"A new structure of low-noise CMOS differential amplifier","authors":"Wei Lan, Gao Jim, Chen Zhongjian, Ji Lijiu","doi":"10.1109/ICASIC.2005.1611337","DOIUrl":"https://doi.org/10.1109/ICASIC.2005.1611337","url":null,"abstract":"A new structure of low-noise CMOS differential amplifier has been presented in this paper. The structure is mainly based on a load of common-gate MOSFETs with resistances in series at sources (CG-R load), which does not increase complication of the circuit. This structure decreases 1/f noise of the load by a (1 + g/sub m2/R) /sup 2/ coefficient, while keeps the voltage gain high. The simulation result for the given example reveals an average reduction of 90% for load noise at low frequencies, compared with current-mirror load (CM load).","PeriodicalId":431034,"journal":{"name":"2005 6th International Conference on ASIC","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117159489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-10-24DOI: 10.1109/ICASIC.2005.1611512
Zhang Xun, Jin Weiwei, Jin Dong-ming
An improved approach to design the approximate squaring function is presented in this paper. It is implemented through a simple combinational logic circuit with fewer transistors. In addition, the maximum relative error (MRE) and average relative error (ARE) of squaring approximation are both improved compared with the previous methods. The algorithm is implemented by a VLSI design of 7-bit approximate squaring function.
{"title":"Circuit design of an improved approximate squaring function","authors":"Zhang Xun, Jin Weiwei, Jin Dong-ming","doi":"10.1109/ICASIC.2005.1611512","DOIUrl":"https://doi.org/10.1109/ICASIC.2005.1611512","url":null,"abstract":"An improved approach to design the approximate squaring function is presented in this paper. It is implemented through a simple combinational logic circuit with fewer transistors. In addition, the maximum relative error (MRE) and average relative error (ARE) of squaring approximation are both improved compared with the previous methods. The algorithm is implemented by a VLSI design of 7-bit approximate squaring function.","PeriodicalId":431034,"journal":{"name":"2005 6th International Conference on ASIC","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120998187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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