SystemC TLM 01 Introduction
SystemC Transaction Level Modeling (TLM)
Transaction-level Modeling (TLM) standard interfaces for SystemC
- provides an essential framework needed for model exchange within companies and across the IP supply chain for architecture analysis, software development and performance analysis, and hardware verification.
- It explicitly addresses virtual prototyping in which SystemC models can easily be exchanged and arranged within a system.
- By providing a strong modeling foundation for virtual prototyping, the standard enables optimal reuse of models and modeling effort across different use cases.
TLM focuses on the modeling of systems based on
- memory-mapped busses and
- on-chip communication networks.
TLM-2 Coding Style
have been categorized according to a range of criteria, leading to standard interfaces differentiated by
- loosely-timed (LT) and
- approximately-timed (AT) modeling styles.
Extended APIs
provide a fundamental, general-purpose interoperability layer. A specific payload, to be used in conjunction with these interfaces, helps achieve a higher degree of interoperability when generically modeling memory-mapped bus-based components.
Several TLM features boost simulation performance — enabling what is called “speed interoperability” in addition to “model interoperability” for SystemC virtual platforms.
Temporal decoupling allows initiator models, such as instruction set simulators, to run ahead of the SystemC kernel and synchronize only periodically to significantly reduce the required number of costly context switches.
The direct memory interface allows interconnect models to be bypassed, facilitating high-speed access to modeled memory. A dedicated transaction debug interface ensures that debugging is an integral part of a system model while enabling debug activity without interference with the system simulation.
SystemC TLM is integral part of the SystemC language standard defined in IEEE Std 1666-2011.
Initiators, Targets, Transactions
TLM 2.0 Coding Styles
Generic Payload
Command, Address, Data
Transport Interfaces
Loosely Timed Model
Approximately Timed Model
Temporal Decoupling
Time Quantum
Active/Passive Slaves
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Direct Memory Interface (DMI)
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Socket
Reference
Notes Mentioning This Note
Table of Contents
- SystemC TLM 01 Introduction
- SystemC Transaction Level Modeling (TLM)
- Transaction-level Modeling (TLM) standard interfaces for SystemC
- TLM focuses on the modeling of systems based on
- TLM-2 Coding Style
- Extended APIs
- Initiators, Targets, Transactions
- TLM 2.0 Coding Styles
- Generic Payload
- Transport Interfaces
- Loosely Timed Model
- Approximately Timed Model
- Temporal Decoupling
- Time Quantum
- Active/Passive Slaves
- Direct Memory Interface (DMI)
- Socket