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The eSi-3200 is a robust 32-bit processor focused on achieving low-cost and low-power performance ideal for embedded control systems. Its architecture, designed without cache, ensures deterministic performance suited for real-time applications. Leveraging a modified-Harvard memory architecture, it supports simultaneous instruction and data fetching. Within its 5-stage pipeline, it achieves high GHz clock frequencies and delivers a wide array of arithmetic computations. It boasts a set of 104 basic instructions and supports IEEE-754 compliant floating-point operations alongside a diverse set of optional application-specific instructions tailored to optimize performance. Its capacity to perform complex operations makes it adaptable to various computational needs without excessive power use.
The eSi-1600 is a compact 16-bit RISC CPU crafted for efficiency in both cost and power consumption. This processor shows performance characteristics akin to more costly 32-bit CPUs, while maintaining a system cost competitive with 8-bit processors. It suits applications requiring control in mature mixed-signal processes, needing less than 64kB of memory. The architecture supports up to 16 general-purpose registers, offering 92 basic instructions and 10 addressing modes. The small gate count keeps silicon area at a minimum, fostering significant power savings especially when operating at reduced frequencies, thus extending battery life in embedded applications. Equipped with a 5-stage pipeline, it manages a high clock frequency, even within seasoned manufacturing processes, entailing less power wastage and efficient performance management.
The eSi-3250 represents a high-performance 32-bit RISC core designed to efficiently integrate into ASIC and FPGA contexts, where slower or off-chip memories are employed. It addresses high-performance demands through separate instruction and data caches and supports configurations in size and associativity to enhance both performance and power efficiency. The optional memory management unit (MMU) supports physical or virtual memory deployments while ensuring secure and efficient memory management. This processor excels in providing exceptional code density alongside a diverse set of arithmetic and application-specific instructions. Its capacity to handle multiple interrupts and its robustness in high-frequency processes make it suitable for demanding embedded applications
The eSi-1650 distinguishes itself by integrating an instruction cache into its low-power 16-bit RISC architecture. This core focuses on offering a power and area-efficient solution for mature process nodes where OTP or Flash are implemented for program storage. The instruction cache aids in overcoming the limitations posed by memory speed, thus maximizing CPU frequency and minimizing the overall silicon impression. Ideal for low-power applications where an 8-bit CPU might be impractical or a 32-bit CPU excessive, it delivers exceptional code density without compromising on performance thanks to its rich instruction mix capable of efficient power gating and rapid interrupt handling.
The eSi-3264 stands as the pinnacle of the eSi-RISC family, offering a 32/64-bit processor with advanced DSP extensions supporting SIMD (Single Instruction Multiple Data) operations. Engineered for applications requiring significant DSP functionality without a high silicon footprint, the eSi-3264 integrates dual/quad-multiply-accumulate units for complex arithmetic operations. Enhancements include both single and double precision floating-point instructions conforming to the IEEE-754 standard. With a configurable memory management unit (MMU) and cache architecture, it manages high data throughput with minimal delay. Tailored for audio, sensor hub, motion control, and similar applications, this processor delivers robust performance in a power-efficient package.
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