High speed interfaces for chip to chip communication on interposer based integration

Chaudhary, Muhammad Waqas; Heinig, Andy

doi:10.23919/empc.2017.8346872

Cited by 1 publication

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this article, we propose a general transition signaling protocol called multiwire phase encoding (MWPE), which is designed to exploit timing correlations between multiple signaling wires to transmit data at effective rates: 1) higher than the bandwidth limit of a single wire; 2) higher than the rate of other known transition signaling techniques; and 3) comparable to or higher than parallel conventional NRZ encoded links. Both passive [13] and active [14] interposer links have been successfully implemented and shown promise, as has the use of transition signaling for communication between multiple locally clocked but globally asynchronous domains on an NoC [15]. On-chip or on-interposer links would be the ideal target applications for the proposed MWPE encoding.…”

Section: Introductionmentioning

confidence: 99%

Multiwire Phase Encoding: A Signaling Strategy for High-Bandwidth, Low-Power Data Movement

Mukim

Brewer

2021

IEEE Trans. VLSI Syst.

View full text Add to dashboard Cite

This article presents multiwire phase encoding (MWPE), a transition signaling technique aimed at chip-to-chip communication on silicon interposer technology, where multiple, relatively low-bandwidth transmission lines can be easily routed between high-performance dies. The encoding exploits timing correlation between transitions on multiple band-limited wires to achieve high ensemble bandwidth, potentially exceeding that of parallel conventionally encoded NRZ links. The unambiguous encoding enables instantaneous bit synchronization, resulting in low-power, low-latency, PLL-/DLL-free on-chip data movement. Theoretical and practical bandwidths achievable by phase-encoded links are evaluated as a function of channel properties. Link timing, driver, and receiver circuits are implemented to evaluate the link performance and power costs associated with moving MWPE data. The Hspice simulation-based estimates indicate that a 2-mm-long MWPE link can achieve 126-Gb/s bandwidth on a lossy, dispersive transmission line medium, with an energy cost of 0.24 pJ/bit in 22-nm FDX technology.

show abstract

Section: Introductionmentioning

confidence: 99%