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EETE MAY 2015

Through MIPSfpga, Imagination is providing universities with a simplified version of its popular MIPS microAptiv CPU core which has been configured by an academic specifically for academic use. The CPU has all the features (MMU, cache controllers, debug interfaces, etc.) required to run a full blown operating system (e.g. Linux). This is contrast to other university programs where the core is usually encrypted (i.e. a black box) and can only run a simple RTOS. It is offered as part of a complete free-to-download package for universities, together with a Getting Started Guide, teaching guide for professors, and examples designed to enable students to see how the CPU works and explore its capabilities. “To be a success, such an initiative much reach two objectives: be useful to teachers, and offer long term commercial benefits for the company”, explained Owen, emphasizing that all the teaching material had be written by academics for academics rather than being sourced from in-house training material. “This represents a significant investment for a company the size of Imagination Technologies, several hundred thousand dollars, a dozen people involved and myself working full-time on this” he added. Imagination Technologies will also offer active technical support to ensure teachers start from a known good position rather than from MIPS-like or MIPS-compatible architectures. With the materials, students can develop a CPU and take it through debug, running on an FPGA platform. The MIPSfpga deliverables were developed by Dr. David Harris and Dr. Sarah Harris, professors who co-wrote the popular book, ‘Digital Design and Computer Architecture’, now in its second edition. Dr. David Harris configured the MIPS CPU at the heart of MIPSfpga, and Dr. Sarah Harris developed the teaching materials. This MIPS CPU configuration is designed to run on a low-cost FPGA platform, with guides available for the Digilent Nexys4 platform with a Xilinx Artix-7 FPGA, and the Terasic DE2 platform with an Altera Cyclone FPGA. It could take five to ten years before Imagination really gets a return on its investment, but this is part of the company’s long term strategy to meet a significant growth target with MIPS. Owen expects that when a whole generation of students having studied the real MIPS will move to engineering roles, the sales effort will be significantly eased for a product they already know. www.electronics-eetimes.com The MIPSfpga CPU and related materials are available for download from the Imagination University Programme website now for first phase users via an application process. Academics should visit http://community.imgtec.com/university to register for the IUP and learn more. Phase two, starting in June, will require only a simple clickthrough agreement. Additional teaching materials are being developed and will be made available later this year. Imagination is also working with Xilinx through its University Program to roll out MIPSfpga to universities worldwide, cosponsoring workshops for professors to get started. ISOLATED FLYBACK CONVERTERS nHigh Security n High Reliability n Compact Solution BD7F100HFN-LB is an optocoupler-less Isolated Flyback Converter. The device uses ROHM’s original Adapted-Type ON-Time Control Technology to control the output voltage. No external phase compensation parts are required. Key Features • No external isolators like opto-coupler! • No external components for phase compensation! • Low ripple noise by fixed switching frequency • High efficiency by light load mode • Output current compensation function • Soft start function Applications Specifications • Input Voltage: 3 V to 40 V • 60V MOSFET integrated • Junction Temperature: -40 °C to +125 °C • Switching Frequency of 400 kHz (Typ) • Current Limit (Primary): 1.25 A (Typ) • Protect function OCP, TSD, Vin UVLO and transformer winding ratio Isolated Power Supply for Industrial application Gate driver circuit secondary power supply Power supply for optocoupler, digital isolations Isolated interface drivers (RS-485/232, CAN) power supply Technology for you Sense it Light it Power it ! www.rohm.com/eu


EETE MAY 2015
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