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1 International Journal of Microelectronics and Computer Science

1 2010

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AMC timing receiver and clock synthesizer module for the LLRF system

Czuba K., Bou Habib S., Sikora D.

International Journal of Microelectronics and Computer Science

2010

Vol. 1, nr 2

125-130

The new LLRF system architecture based on the ATCA platform was developed and tested at FLASH. The LLRF system require generation of highly stable clock and trigger signals for high precision data processing and synchronous system operation. This paper describes the conception, design and performance test results of the updated AMC module designed to fulfill the LLRF system timing synchronization needs. This module contains three independent clock synthesizers that are able to generate LVDS clock signals in the range of 10 MHz to 100 MHz. These signals are transmitted over the AMC connector and can be distributed over the entire ATCA crate.The clock synthesizers can be synchronized either by an internal quartz oscillator or an external phase reference signal provided to the board either via the AMC edge connector or via a front panel socket. This assures flexibility when using the board for tests and for the LLRF system operation. Besides clock synthesizers the AMC card contains also an optical receiver suited to convert and decode FLASH timing signals distributed in the FLASH accelerator system.