The Synopsys CHI VIP simulates CHI transactions through active agents, as defined by the CHI specification. The VIP provides a CHI System Environment (Env) which comprises of agents for RN (Request Node) and SN (Secondary Node), and a CHI System Monitor. The RN and SN agents support all the protocol features as per the CHI Specification and the methodology functionality normally associated with active and passive UVM components. The RN agent has an internal cache model which facilitates the sole of actual cache and the SN agent has an inbuilt memory instance.
The CHI System Env itself is contained within top level System VIP component AMBA System Env. User can either use AMBA System Env, CHI System Env, or standalone RN and SN agents in the testbench. The CHI System Monitor component is instantiated within the CHI System Env component. The System Monitor performs system-level checks across the CHI RN and SN ports within the system to ensure coherency is maintained as per the protocol.
AMBA Verification System Environment
The AMBA CHI verification system environment is integrated with the AMBA verification system environment to provide all of the configurability of the AMBA CHI Verification System Environment with the addition of AMBA 4 AXI, ACE, AHB and APB verification system environments. A system monitor provides system-wide checking across all of the protocols.