共查询到17条相似文献,搜索用时 125 毫秒
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一种高速串行数据接收芯片的设计 总被引:3,自引:2,他引:3
文章设计了一种用于光纤通信的高速串行数据接收芯片。本芯片采用0.6μm BiCMOS工艺实现.最高工作频率为400M~,主要由时钟数据恢复、串并转换、10B/B解码等电路构成。在设计中,采用了双PI工环路、全差分拓扑结构、负阻放大电路与运放级联等结构,有效地减小了功耗及噪声,且用Cadence软件进行了仿真验证。 相似文献
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基于FPGA的UART模块的设计 总被引:4,自引:2,他引:4
为了实现计算机与基于FPGA图像处理系统的数据通信,这里用FPGA设计了一款简易通用异步收发器(UART)模块.UART的主要功能是实现数据处理模块与RS 232串行数据接口之间的数据转换,即将送过来的并行数据转换为输出的串行数据流,由数据处理模块传送给计算机,还可以将串行数据转换为并行数据,供数据处理模块使用.为了简化电路设计,减少电路面积,这里省略了UART系统中的奇偶检验模块. 相似文献
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A semi-digital clock and data recovery (CDR) is presented. In order to lower CDR trace jitter and decrease loop latency, an average-based phase detection algorithm is adopted and realized with a novel circuit. Implemented in a 0.13 μm standard 1P8M CMOS process, our CDR is integrated into a high speed serial and de-serial (SERDES) chip. Measurement results of the chip show that the CDR can trace the phase of the input data well and the RMS jitter of the recovery clock in the observation pin is 122 ps at 75 MHz clock frequency, while the bit error rate of the recovery data is less than 10 × 10-12. 相似文献
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一种全CMOS工艺吉比特以太网串并-并串转换电路 总被引:2,自引:1,他引:2
本文介绍了一种单片集成的吉比特以太网串并-并串转换电路。在芯片中,模拟锁相环产生1.25GHz高速时钟(当芯片用于光纤网络,时钟速率就为1.06GHz),同时一个10到1多路选择器完成并行数据到串行的转换。在接收端,差分输入信号依次经过均衡电路、双端-单端转换电路转换成数字信号。同时,数据和时钟提取电路提取出时钟,并将数据重新同步。最后,串并转换电路完成串行-并行转换和字节同步。实验芯片采用0.35μmSPTM CMOS工艺,芯片面积为1.92mm^2,在最高输入输出数据波特率条件下的功耗为900mW。 相似文献
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采用0.18μm CMOS工艺设计实现了一个12.5 Gb/s半速率时钟数据恢复电路(CDR)以及1:2分接器,该CDR及分接器是串行器/解串器(SerDes)接收机中的关键模块,为接收机系统提供6.25GHz的时钟及经二分接后速率降半的6.25Gb/s数据.该电路包括Bang-bang型鉴频鉴相器(PFD)、四级环形压控振荡器(VCO)、V/I转换器、低通滤波器(LPF)、1:2分接器等模块,其中PFD采用一种新型半速率的数据采样时钟型结构,能提高工作速率达到12.5 Gb/s.芯片测试结果显示,在1.8V的工作电压下,VCO中心频率在6.25GHz时,调谐范围约为1GHz;输入12Gb/s、长度为231-1的伪随机数据时,得到6GHz时钟的峰峰抖动为9.12ps,均方根(RMS)抖动为1.9ps;整个系统工作性能良好,二分接器输出数据眼图清晰,电路核心模块功耗为150mW,整体芯片面积0.476×0.538mm2. 相似文献
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Yukun He Zhao Yuan Kanan Wang Renjie Tang Yunxiang He Xian Chen Zhengyang Ye Xiaoyan Gui 《半导体学报》2024,45(6):062204-1-062204-12
A 28/56 Gb/s NRZ/PAM-4 dual-mode transceiver (TRx) designed in a 28-nm complementary metal-oxide-semiconductor (CMOS) process is presented in this article. A voltage-mode (VM) driver featuring a 4-tap reconfigurable feed-forward equalizer (FFE) is employed in the quarter-rate transmitter (TX). The half-rate receiver (RX) incorporates a continuous-time linear equalizer (CTLE), a 3-stage high-speed slicer with multi-clock-phase sampling, and a clock and data recovery (CDR). The experimental results show that the TRx operates at a maximum speed of 56 Gb/s with chip-on board (COB) assembly. The 28 Gb/s NRZ eye diagram shows a far-end vertical eye opening of 210 mV with an output amplitude of 351 mV single-ended and the 56 Gb/s PAM-4 eye diagram exhibits far-end eye opening of 33 mV (upper-eye), 31 mV (mid-eye), and 28 mV (lower-eye) with an output amplitude of 353 mV single-ended. The recovered 14 GHz clock from the RX exhibits random jitter (RJ) of 469 fs and deterministic jitter (DJ) of 8.76 ps. The 875 Mb/s de-multiplexed data features 593 ps horizontal eye opening with 32.02 ps RJ, at bit-error rate (BER) of 10−5 (0.53 UI). The power dissipation of TX and RX are 125 and 181.4 mW, respectively, from a 0.9-V supply. 相似文献
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This paper presents the implementation of a multi-rate SerDes transceiver for IEEE 1394b applications. Simple and effective pre-emphasis and equalizer circuits are used in the transmitter and receiver, respectively. A phase interpolator based clock and data recovery circuit with optimized linearity is also described. With an on-chip fully integrated phase locked loop, the transceiver works at data rates of 100 Mb/s, 400 Mb/s, and 800 Mb/s, supporting three different operating modes of S100b, S400b, and S800b for IEEE 1394b. The chip has been fabricated using 0.13 μm technology. The die area of transceiver is 2.9×1.6 mm2 including bonding pads and the total power dissipation is 284 mW with 1.2 V core supply and 3.3 V input/output supply voltages. 相似文献
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ZHAO Wenhu WANG Zhigong 《电子学报:英文版》2008,(2):386-388
This paper describes a configurable transceiver which can realize multiple operation modes to meet various fiber communication standards. With this configurable architecture, the transceiver can operate in 2:1, 3:1, 4:1, 5:1, 6:1, 8:1, 10:1 multiplexing modes and 1:2, 1:3, 1:4, 1:5, 1:6, 1:8, 1:10 demultiplexing modes with internal synchronized clock signals. Comma detection and word alignment circuits are also included in the receiver to meet the standards using 8B/10B code. This configurable multi-mode transceiver has been implemented in a 0.25μm CMOS technology. 相似文献
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Yi-Ju Chen 《Microelectronics Journal》2006,37(9):985-992
This paper presents an integrated optical receiver that operates at 1 Gb/s in a standard 0.35 μm digital CMOS technology. The receiver consists of an integrated CMOS photodetector, a transimpedance amplifier (TIA) followed by a post-amplification stage and a dual-loop clock and data recovery (CDR) circuit. At a wavelength of 860 nm, the circuit requires an average light input power of −19.7 dBm to obtain a bit-error rate (BER) of 10−12. The complete receiver consumes a total power of approximately 155 mW from a 3.3-V supply. The core circuit area is 0.85×1.32 mm2. 相似文献