The control and readout systems of the CMS pixel barrel detector

The CMS pixel detector is a complex device consisting of about 1400 modules. The control and the readout systems of this detector will be described. The detector modules have to be correctly set up before data taking can start. This means downloading of a very large number of parameters to the front-ends. During data taking the information from the detector has to be read out and various detector parameters have to be monitored. The readout system has to be very efficient to minimize dead time. A set of fast control signals will be used to reset and re-synchronize the detector.