Automatic Place-and-Route of emerging LED-driven wires within a monolithically-integrated CMOS plus III-V process

作者：Krishna Tushar; Balachandran Arya; Ben Chiah Siau; Zhang Li; Wang Bing; Wang Cong; Kian Kenneth Lee Eng; Michel Jurgen; Peh Li Shiuan

来源：PROCEEDINGS OF THE 2017 DESIGN, AUTOMATION %26 TEST IN EUROPE CONFERENCE %26 EXHIBITION (DATE), IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA, 344-349, 2017.

We leverage a recently demonstrated CMOS compatible III-V and Si monolithic integrated process to design photonic links comprising LEDs and photodiodes, as direct replacements for on-chip electrical wires. To enable VLSI-scale design of chips with such LED links, we create a library of opto-electronic standard cells, and model waveguides as traditional metal layers. This lets us integrate LED links into a commercial place-and-route tool, which treats them as electrical cells and wires for the most part, reducing design effort. We also add support for automated replacement of electrical nets with LED links.
We find that LED-interconnect based designs substantially lower energy consumption vs. electrical copper wires (similar to 39% reduction in the Network-on-Chip, similar to 27% reduction within a processor core) while achieving the same latency and bandwidth, demonstrating the promise of LED on-chip interconnects.

• 出版日期2017
• 单位南阳理工学院