Gigabit Rate Data Transfer Through Coaxial Cable

Introduction

In the current plans for the pixel upgrade the data from the chips of one stave will be sent out through the Super Module Controller located at the end of the stave. This location is exposed to extremely high doses of radiation which makes the use of optical fibers for data transfer problematic. Therefore we want to investigate the transfer of data at high rates through coax cable. Things to be checked include

Teststand

To coduct the tests we use a Virtex 4 chip (FX20). This chip has 8 MGT tranceivers that are capable of GBit rates. FPGA logic implements an error bit rate tester running on the MGTs. Initially we use the ML405 Xilinx evaluation boards for our testing. These boards will be replaced with custom made boards that allow for the use of different types of connectors by plugging PC boards that carry the connector into the main test board.

Presentations

Documentations and Links

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Last modified: Mon Apr 7 2008 by Martin Kocian