Register Abstraction Model with RAL

Amit Sharma, Synopsys Usually, designs have a single interface but some designs may have more than one physical interface, each with accessible registers or memories. RAL supports designs with multiple physical interfaces, as well as registers and memories shared across multiple interfaces. In RAL, a physical interface is called a domain. Only blocks and systems can have domains. Domains can contain registers and memories.   Now, how do you enable a register or a memory to be shared across multiple physical interfaces or ‘domains’ in RAL?

Amit Sharma, Synopsys In one of my previous posts on  Virtual Registers I talked about how you use RAL to model Virtual Registers or fields which are an efficient means of implementing large number of registers in  memory or RAM instead of individual flip-flops.  I also mentioned that they are  implemented as arrays associated with a memory. In this post, I will talk about how you access these registers through RAL. Normal registers can be accessed using  the hierarchical name in RAL.