On-Chip Communication Architectures

126 CHAPTER 4 Models for Performance Exploration

obtained by CCATB over PA-BCA is a result of sacrifi cing visibility of signals at

every cycle boundary, which has a signifi cant simulation overhead. Additionally,

CCATB models use event synchronization semantics [14] to handle intra-transac-

tion cycle level events (such as interrupts), thus capturing not only the system

events occurring between different transactions, but also within transactions

which can affect accuracy, and thus maintain the same level of accuracy as in PA-

BCA models.

4.2.4 Transaction Level Models (TLM)

Transaction level models (TLM) [25, 26] are very high level bit-accurate ...