TTCPR: a PMC receiver for TTC
J. L. Schlereth, John W. Dawson, Francis, D J, W.N. Haberichter · CERN Document Server (European Organization for Nuclear Research) · 2001
The TTCPR receiver is a mezzanine card intended for use in distributing TTC information to Data Acquisition and Trigger Crates in the ATLAS Prototype Integration activities.An original prototype run of these ~cards was built for testbeam and integration studies, implemented in both the PMC and PCI form factors, using the TTCrx chips from the previous manufacture.When the new TTCrx chips became available, the TTCPR was redesigned to take advantage of the availability and enhanced features of the new TTCRX(1), and a run of 20 PMC cards was manufactured, and has since been used in integration studies and the testbeam.The TTCPR uses the AMCC 5933(2) to manage the PCI port, an Altera 10K30A(3) to provide all the logic so that the functionality may be easily altered, and provides a 4K deep FIFO to retain TTC data for subsequent DMA through the PCI port.In addition to DMA's which are mastered by the Add On logic, communication through PCI is accomplished via mailboxes, interrupts, and the pass-through feature of the 5933.An interface to the I2C bus of the TTCRX is provided so that internal registers may be accessed, and the card supports reinitialization of the TTCRX from PCI. Software has been developed to support operation of the TTCPR under both LynxOS and Linux.