On-Chip Communication Architectures

282 CHAPTER 7 Encoding Techniques for On-Chip CA

7.3 TECHNIQUES FOR REDUCING POWER AND CAPACITIVE

CROSSTALK EFFECTS

Several encoding schemes have been proposed that simultaneously reduce power

and capacitive crosstalk effects. Early work by Baek et al. [107] proposed the low

energy set scheme (LESS) to minimize coupling effects that cause signifi cant delay

and power consumption in on-chip buses. The proposed technique uses an XOR-

XNOR (called XON type) or the XNOR-XOR (called XNO type) operations to trans-

mit data. In the XON technique, the bus is split into groups of 4 bits, and the XOR

operation is performed between the most signifi cant ...