← Safety Soft-IP
Coherent Memory Subsystem

CHI Coherent-Memory Fabric

A shrink-wrapped, ISO 26262-ready AMBA-5 CHI coherent-memory subsystem.

Request the data room →All IP
What’s inside

Architecture at a glance

Caching agentRN-F #1Caching agentRN-F #2CHI interconnectchannel fabricHome NodeHN-F · point of coherencyLPDDR5 controllerreal DRAM endpointOrdering proven by formal · data-value coherence demonstrated end-to-end onto real LPDDR5.

A self-contained coherent CHI fabric — caching agents (RN-F) sharing one Home Node point-of- coherency over an interconnect, terminated in a real LPDDR5 controller, with in-system trace and latency observability — that drops into an SoC with the FMEDA work products already generated, coherency proven by formal, and data-value coherence demonstrated end-to-end onto real LPDDR5. You’re not acquiring RTL — you’re acquiring a coherent fabric whose safety and correctness case is already assembled.

Why now

Coherent fabrics are the backbone of multi-core SoCs, and AMBA-5 CHI is the interconnect the industry standardized on — but a safety-instrumented, formally-verified CHI subsystem that comes with its FMEDA and a real memory endpoint is not something you can buy off a shelf.

What’s in the box

ElementFunction
Caching agents (RN-F)Fully-coherent requesters sharing state
Home Node (HN-F)The point-of-coherency — orders and resolves
InterconnectCHI channel fabric between agents and home
LPDDR5 controllerReal DRAM endpoint — coherence demonstrated onto silicon-class memory
ObservabilityIn-system trace + latency monitoring

What makes it credible


Full formal proofs, FMEDA, and RTL data room under mutual NDA.Request the data room →

circuit-design.space · +1-971-357-1400 · sales@circuit-design.space

Bring CHI Coherent-Memory Fabric into your program

Full FMEDA, DFA/formal proofs, and the RTL data room follow under a mutual NDA.

Request the data room →Browse the catalog

Figures are pre-silicon engineering-grade estimates for a Safety Element out of Context (SEooC); final ASIL sign-off is the integrator’s, supported under NDA. “ISO 26262-ready” means the work products are generated — not that the IP is third-party certified.

circuit-design.space · +1-971-357-1400 · sales@circuit-design.space