What is Register Abstraction Layer?

What is Register Abstraction Layer?

In a verification context, a register model (or register abstraction layer) is a set of classes that model the memory- mapped behavior of registers and memories in the DUT in order to facilitate stimulus generation and functional checking (and optionally some aspects of functional coverage).

What is the advantage of RAL?

RAL model mimics the design registers and this entire model is fully configurable. Due to its abstraction behavior, RAL model can be easily migrated from block level to system level.

How do you use RAL in UVM?

UVM RAL Model creation involves the below steps,

1. Writing register classes.
2. Writing register package.
3. Instantiation of register classes in register package.
4. Writing Adapter class.
5. Integrating register package and adapter in environment.
6. Accessing registers with RAL.

What is register in UVM?

A register model is an entity that encompasses and describes the hierarchical structure of class objects for each register and its individual fields. We can perform read and write operations on the design using a register model object.

What are the advantages of the UVM RAL model?

Advantages of UVM RAL i.e, registers can be accessed with its names. UVM provides a register test sequence library containing predefined test cases these can be used to verify the registers and memories. register layer classes support front-door and back-door access.

How do I check my UVM registration?

Use the features and capabilities of the UVM register layer. Create configurable and reusable reference models for register behavior. Integrate the register model into your verification environments using appropriate prediction. Create self-checking sequences to verify register and memory behavior.

What is RAL in paint?

RAL is an European color matching system which defines colors for paint, coatings and plastics. ‘RAL’ is the abbreviation of ‘Reichs-Ausschuß für Lieferbedingungen und Gütesicherung’. This name can be translated in English as ‘National Commission for Delivery Terms and Quality Assurance’.

What is the difference between new () and create?

The object used in Object. create() actually forms the prototype of the new object, whereas in the new Function() from the declared properties/functions do not form the prototype. You cannot create closures with the Object.

What is mirror in UVM?

The mirror() method compares the read value against the m_desired if the value of the check argument is UVM_CHECK . Note that the UVM Class Library document states that it compares the read value against the mirrored value, but if you look at the line 2,944 of uvm_reg.

What is Adapter in UVM?

UVM Register Model Adapter The RAL adapter acts as a converter between the RAL model and Interface. It converts transactions of RAL methods to Interface/Bus transactions. The Adapter converts between register model read, write methods and the interface-specific transactions.

What is predictor in UVM RAL?

UVM Register Model Predictor UVM RAL Predictor predicts the register access done through the register model and updates the RAL Model registers. uvm_reg_predictor updates the register model based on observed transactions published by a monitor.

What is RAL D2?

The RAL Design D2 PLUS represents the ultimate tool in colour nuance and compatibility, comprising of 1,825 RAL Design System Plus colours across 225 colour pages.

What is UVM Ral (Register abstraction layer)?

To access and verify the numerous registers and the huge size of memory, some innovative approach is required. Therefore, UVM provides a base class library for register management and their access, called UVM RAL (Register Abstraction Layer). UVM RAL as the name suggests, is a high-level object-oriented abstraction layer to access design registers.

What are the advantages of the RAL model?

It provides back door access for registers and memory with easy integration liability in UVM verification environment. Whenever a read or write operation is performed, the RAL Model will be automatically updated. It supports design with multiple physical interfaces.

How to access the RAL model register using a particular register map?

Therefore, for each register maps, RAL model sequencer has to be set as shown below: Example to access the RAL model register using a particular register map: UVM supports memory implementation inside the RAL model, called uvm_mem. Like uvm_reg, the purpose of this uvm_mem is also to mimic the memory inside the design.

What is RAL and how do verification engineers use it?

RAL is nothing but a virtual register bank. Generally all chips has a register bank associated with it in it’s design. But for a verification engineer he need to write and read those registers in order to verify the proper working of the design. So, how do verification engineers make use of RAL?