The AMBA VIP Release Notes are installed at:

• Synopsys AMBA VIP Release Notes (PDF)

The Synopsys VIP for APB is a suite of advanced verification components and data objects based on SystemVerilog OVM-compliant technology. This on-line help contains information about the classes, functions, and member variables. It shows class hierarchy and contents and it provides links you can use to navigate to more details. Below is the summary of the components and the user interface of the Synopsys APB VIP.

APB VIP Components

• svt_apb_master_agent Defines an agent for the APB Master component. The master agent encapsulates master sequencer, master driver, and port monitor. The master agent can be configured to operate in active mode and passive mode.
• svt_apb_slave_agent Defines an agent for the APB Slave component. The slave agent encapsulates slave sequencer, slave driver, and port monitor. The slave agent can be configured to operate in active mode and passive mode.
• svt_apb_system_env Defines a System ENV for the APB SVT suite. The APB System ENV encapsulates one master agent, slave agents, system sequencer and the system configuration. The number of slave agents is configured based on the system configuration provided by the user.

APB VIP User Interface
Configuration Objects:
Configuration data objects convey the system level and port level testbench configuration. The configuration data objects contain built-in constraints, which come into effect when the configuration objects are randomized. If the configuration needs to be changed later, it can be done through reconfigure() method of the master, slave or system components. The APB VIP defines following configuration classes:

• svt_apb_configuration APB Base configuration
• svt_apb_system_configuration APB System configuration
• svt_apb_slave_configuration APB Slave configuration

Transaction Objects:
Transaction objects, which are extended from the ovm_transaction base class, define a unit of APB protocol information that is passed across the bus. The attributes of transaction objects are public and are accessed directly for setting and getting values. Most transaction attributes can be randomized. The transaction object can represent the desired activity to be simulated on the bus, or the actual bus activity that was monitored. APB VIP defines following transaction classes:

• svt_apb_transaction (APB Base transaction)
• svt_apb_master_transaction (APB Master transaction)
• svt_apb_slave_transaction (APB Slave transaction)

Analysis port:
The port monitor in the Master & Slave agents provides an analysis port. At the end of the transaction, the port monitor within the Master & Slave agents provides the completed svt_apb_master_transaction & svt_apb_slave_transaction object respectively, from its analysis port.
The analysis port used by port monitor within Master agent and Slave agent is:

• svt_monitor :: item_observed_port

Callbacks:
Callbacks are an access mechanism that enable the insertion of user-defined code and allow access to objects for scoreboarding and functional coverage. Each master and slave component is associated with a callback class that contains a set of callback methods. APB VIP provides following callbacks classes:

• svt_apb_master_callback (Master callback class)
• svt_apb_slave_callback (Slave callback class)
• svt_apb_master_monitor_callback (Master monitor callback class)
• svt_apb_slave_monitor_callback (Slave monitor callback class)

Interfaces and modports:
SystemVerilog models signal connections using interfaces and modports. Interfaces define the set of signals which make up a port connection. Modports define collection of signals for a given port, the direction of the signals, and the clock with respect to which these signals are driven and sampled. APB VIP provides below interfaces:

• svt_apb_if (Top level interface, which contains slave port sub-interfaces)
• svt_apb_slave_if (sub-interface for slave ports)

Functional Coverage:
The Synopsys APB Verification IP provides default transaction coverage. The coverage is shaped based on the configuration. APB VIP provides below coverage callback classes:

• svt_apb_master_monitor_def_cov_callback
• svt_apb_slave_monitor_def_cov_callback

Protocol Checks:
For a complete list of protocol checks supported by the APB VIP, please click on the "Protocol Checks" tab in this class reference documentation.

APB sequence collection:
For a complete list of sequences provided with the APB VIP, please click on the "Sequences" tab in this class reference documentation.