Partial coding algorithm for area and energy efficient crosstalk avoidance codes implementation

Abstract

Abstract. Modern interconnect performance is greatly affected by crosstalk noise due continuous decrease in wire separation and increase in its aspect ratio with technology scaling. Such noise is highly dependent on data transition patterns, coding techniques have been proposed to alleviate crosstalk delay by controlling these patterns. The complexity of available crosstalk avoidance codes, along with their associated overheads, increase rapidly with bus width. The lack of energy and area efficient method to implement such cods has so far prevented their use in practical designs. This paper presents a generic framework which allows efficient implementations of crosstalk avoidance codes; the essence of the proposed approach is based on the partial coding concept. Quantitative analysis performed in 32nm technology shows that substantial savings in area and energy costs can be obtained using the proposed technique compared with both existing coding solutions and conventional methods as shielding and repeater insertion.

UP-Down OLC: New One-Lambda Crosstalk Avoidance Code Design Based on 5-Wire Model

“…PS-Fibo generates FPF CACs using a non-Fibonacci-based numerical system. Recently, the OLC coding mechanisms Subtraction-based-Numeral (Sub-Num) [18] and WU-OLC [10] have been proposed. The symbols that are used in paper is shown in Table 2 .…”

“…On the basis of disposed eliminated patterns, crosstalk avoidance codings can be divided based on the delay that can be reduced in the coding method. These codes are Forbidden Pattern Condition (FPC) [13] [15] codes, Forbidden Overlap Condition (FOC) [10] [16] codes, Forbidden Transition Condition (FTC) [11] codes and One Lambda Code (OLC) [10] [18]. OLCs are considered as the most effective types among the stated mechanisms.…”