ARM Cortex-R4XThe Cortex-R4X processor is a high-performance implementation of the Cortex-R4 processor incorporating Intrinsity’s Fast14® 1-of-N Domino Logic (NDL) technology, which enables faster circuit speeds while minimizing power consumption and area. Operating at around twice the frequency achievable using standard synthesis techniques on the same silicon process, the ARM Cortex-R4X processor implementation provides increased performance for very high-volume, deeply embedded applications such as hard disk drives, printers and networking equipment. The Cortex-R4X processor implementation incorporates all of the advanced features of the popular Cortex-R4 processor. These enable the execution of complex control algorithms and real-time workloads in next-generation embedded systems, while maximizing power efficiency. Features:
- Extremely flexible local memory architecture enables tightly coupled memory (TCM) to be unified into a single logical address space while providing the same performance as cache memory.
Straightforward direct memory access (DMA) support for the TCM extends the use of this memory for shared buffers and streaming data. Error Correcting Code (ECC) technology which monitors memory accesses to detect and correct errors, providing very high reliability and availability. Advanced AMBA® 3 AXI compliant bus interfaces allow high performance memory backplanes to be implemented using the ARM PrimeCell® portfolio.
Various configurations of the Cortex-R4 processor will be available as Cortex-R4X implementations, on a range of silicon processes. The first implementation will operate at 600MHz under worst-case operating conditions on the TSMC 65LP process. As a cycle-accurate implementation of the Cortex-R4 processor it executes all the same software binaries, and is fully supported by the RealView® Development Suite. Standard Cortex-R4 processor models can be used for cycle accurate modelling of the Cortex-R4X processor implementation with RealView SoC Designer, offering rapid prototyping and architectural exploration. The implementation is delivered as hard macro with standard static interfaces, allowing easy integration into an SoC developed using standard synthesis methodologies. The Cortex-R4X processor implementations are available for licensing from ARM immediately.  |  | | | TSMC 65LP | | | | | | Frequency (MHz) | | 600MHz | | | | Area without cache (mm2) | | 0.9 | | | | Power without cache (mW/MHz) | | 0.57 | | | |
Frequency is quoted at 125C, Slow-slow silicon and 1.08V
Power is quoted is WORST CASE (125C, Fast-Fast silicon and 1.32V).
Data is characteristic of an implementation using only Regular Vt transistors. | 
