This paper presents a CML transceiver for a PCI-express generation 2 physical layer protocol that has been fabricated by SMIC＇s 0.13μm CMOS technology.The active area of the transceiver is 0.016 mm^2 and it consumes a total of 150 mW power at a 1.2 V supply voltage.The transmitter uses two stage pre-emphasis circuits with active inductors,reducing inter-symbol interference and extended bandwidth;the receiver uses a time-domain adaptive equalizer,the circuit uses an inductive peaking technique and extends the bandwidth,and the use of active inductors reduces the circuit area and power consumption effectively.The measurement results show that this circuit could stably transmit the signal at the data rate of 5 Gbps,the output signal swing of the transmitter is 350 mV with jitter of 14 ps,the eye opening of the receiver is 135 mV and the eye width is 0.56 UI.The circuit performance sufficiently meets the requirements of the PCI-Express 2.0 protocol.
针对便携式设备中图形用户界面图像显示需求的不断提高,分析讨论了2D图像加速引擎的实现技术,基于GBA(Game Boy Advance)的模拟器VBA(Visual Boy Advance)的绘图方法提出了2D图像硬件加速引擎的实现架构,该架构对速度、面积及总线带宽等因素进行了优化处理,减轻了CPU的负荷、同时达到了低功耗设计的目的.基于该架构实现的2D图像硬件加速引擎通过了正确的验证与测试,能有效地支持GBA等2D游戏,根据需要可以应用到不同的图形用户界面,提供高效的图像加速显示能力.
