The clock and control board for the cathode strip chamber trigger and DAQ electronics at the CMS experiment

The design and functionality of the clock and control board (CCB) for the cathode strip chamber (CSC) peripheral electronics and the track finder crate at the CMS experiment are described. The CCB performs interface functions between the timing, trigger and control (TTC) system of the whole experiment and CSC electronic modules located in 9U VME crates on the periphery of the detector and in the underground counting room. (5 refs).