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1

In-system programming of non-volatile memories on microprocessor-centric boards

Tsertov A, Devadze S., Jutman A., Jasnetski A

International Journal of Microelectronics and Computer Science

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2014

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Vol. 5, nr 1

25--34

EN

With the continuous growth of capacity of non-volatile memories (NVM) in-system programming (ISP) has become the most time-consuming step in post-assembly phase of board manufacturing. This paper presents a method to assess ISP solutions for on-chip and on-board NVMs. The major contribution of the approach is the formal basis for evaluation of the state-of-the-art ISP solutions. The proposed comparison pin-points the time losses, that can be eliminated by the use of multiple page buffers. The technique has proven to achieve exceptionally short programming time, which is close to the operational speed limit of modern NVMs. The method is based on the ubiquitous JTAG access bus which makes it applicable for the most board manufacturing strategies despite a slow nature of JTAG bus.

2

On In-System Programming of Non-volatile Memories

Tsertov A, Devadze S., Jutman A, Jasnetski a

International Journal of Microelectronics and Computer Science

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2013

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Vol. 4, nr 2

72--78

EN

With the continuous growth of capacity of non-volatile memories (NVM) in-system programming (ISP) has become the most time-consuming step in post-assembly phase of board manufacturing. This paper presents a method to assess ISP solutions for on-chip and on-board NVMs. The major contribution of the approach is the formal basis for comparison of state-of-the-art ISP solutions. The effective comparison pin-points the time losses, that can be eliminated by the use of multiple page buffers. The technique has proven to achieve exceptionally short programming time, which is close to the operational speed limit of modern NVMs. The method is based on the ubiquitous JTAG access bus which makes it applicable for the most board manufacturing strategies despite a slow nature of JTAG bus.

3

USB-based background mode debugger for freescale processors

Przygoda K., Makowski D., Jabłoński G., Napieralski A.

Elektronika : konstrukcje, technologie, zastosowania

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2006

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Vol. 47, nr 10

5-7

EN

The application of an in-Circuit Emulator (ICE) also called On-Circuit Debugger (OCD) or Background Debug Mode (BDM) can simplify arduous debugging process for embedded systems. Hardware debuggers allow to use an external computer for debugging, enable single stepping, breakpoints, and other resources provided by desktop computer programmers. The application of such circuits requisites high speed data rate transfers. Efficient communication protocols and USB-based devices can be easily implemented to improve advantages, of using BDM interfaces. This paper presents an application of upgradable approach to implement USB-based debugger for Freescale microcomputers consisted of USB and Field Programmable Gate Array (FPGA) devices. Moreover the device can properly operate under most popular operating systems like Linux or MS Windows.

PL

Aplikacja Emulatora Wewnątrzukładowego także nazywana Analizatorem Wewnątrzukładowym lub Analizatorem BDM może uprościć procesy żmudnego analizowania pracy systemu wbudowanego. Analizatory sprzętowe pozwalają używać zewnętrzny komputer do analizowania pracy procesora, udostępniają pracę w trybie krokowym i możliwość używania pułapek programowych oraz wiele innych zasobów dostępnych dla programistów. Ta aplikacja wymaga szybkich transferów danych. Wydajne protokoły komunikacyjne oraz urządzenia USB mogą zostać łatwo zaimplementowane, aby udowodnić zalety używania interfejsu BDM. Artykuł przedstawia aplikacje nowej implementacji analizatora USB dla procesorów USB składającej się z urządzeń USB i układu programowalnego FPGA. Urządzenie może być poprawnie używane pod ogólnie dostępnymi systemami operacyjnymi, jak Linux czy Windows.