A RobIn Prototype for a PCI-Bus based Atlas Readout-System
B. Gorini, M. Joos, Jorgen Petersen, Andreas Kugel, Reinhard Männer, Matthias Müller, Maoyuan Yu, B.J. Green, Gerard Kieft · 2003
The Atlas RobIn Prototype is an FPGA and Processor based PCI device, which receives event data fragments on two HOLA SLink ports, buffers and delivers or deletes them on request. Thus it is one of the core devices of the Atlas Readout System (ROS). To study various PCI-Bus and Ethernet based ROS implementations the board offers two interface flavours for data requests: PCI and Gigabit Ethernet. This paper presents a study of a ROS System based on an ordinary PC, hosting up to 3 RobIn Prototypes using the PCI-Bus for data exchange. The multithreaded host software uses an asynchronous messaging scheme optimizing the communication with the RobIns. First measurements indicate that a PCI-Bus based ROS can satisfy Atlas Data-Flow needs.