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JSSC 2013第5期RF & Wireless65nmNeural Network Accelerator

A 047066 pJbit 488 Gbs IO Transceiver in 65 nm CMOS Y oung-Hoon Song Student Mem

一种低功耗转发时钟I/O收发器架构,采用高输出/输入复用和电压缩放技术。
4.8–8 Gb/s, 0.47–0.66 pJ/b, 0.5–0.8 V
低功耗I/O收发器电压模式驱动多相时钟注入锁定振荡器
创新点1:高输出/输入复用技术(系统创新)。该收发器采用4:1输出复用和1:8输入解复用技术,显著提高了数据传输效率,同时降低了功耗,实现了4.8-8 Gb/s的高速率传输。
创新点2:电压缩放与数据速率匹配(系统创新)。通过动态调整供电电压与数据速率匹配,优化了功耗效率,使得能量效率达到0.47-0.66 pJ/b,显著降低了整体能耗。
创新点3:低电压伪差分调节器(电路创新)。采用部分负电阻负载的低电压伪差分调节器,精确控制输出电压摆幅在100-200 mV之间,提高了低频增益和信号稳定性。
创新点4:8相注入锁定振荡器(电路创新)。接收端采用8相注入锁定振荡器,提供超过1UI的去偏斜范围,确保了多通道采样的精确同步,提高了接收器的时序容限。
Abstract
A low-power forwarded-cloc k I/O transceiver archi- tecture is presented that employs a high degree of output/input multiplexing, supply-voltage scaling with data rate, and low-voltage circuit techniques to enable low-power operation. The transmitter utilizes a 4:1 output multiplexing voltage-mode driver along with 4-phase clocking that is ef ficiently generated from a passive poly-phase filter. The output driver voltage swing is accurately controlled from 100–200 using a low-voltage pseudo-differ