Arcetri Astrophysical Observatory

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logosmallarcetri Arcetri Technical Reports 2/2008


Reference design for the Digital BBC Architecture 

G. Comoretto(1), G. Tuccari(2)

(1) INAF Osservatorio Astrofisico di Arcetri
(2) INAF Istituto di Radioastronomia - sez. di Noto

Abstract

The Digital Broadband Converter (DBBC) is a system based on programmable logic, developed at the Noto-IRA radioastronomic station, that is used as a general purpose data acquisition system for radioastronomy. The system includes different board types: a fast Analog to Digital converter board (ADC1), a processing board (CORE1), and a service board (FILA1). Boards can be stacked together to build systems with different complexity. The CORE board contains a Xilinx field programmable gate array, that can be programmed to implement different instruments. As many functions, like data packaging and unpackaging, computer interface, clock generation, are common to any data acquisition instrument, a library of service modules, has been produced, allowing the developer to write only the application specific code. In this report these modules are described, together with the general architecture of the board.

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