Multifunction-timing card lTTEV2 for CoDaC systems of Wendelstein 7-X

The timing system is a crucial element for the CoDaC (Control, Data Acquisition, and Communication) system of the steady state fusion experiment Wendelstein 7-X (W7-X). Its main task is the synchronization of all clocks with sufficient accuracy. Furthermore, it is able to send, receive, and process event messages. It offers a wide range of time related functions, e.g., time capturing, pulse generation, realization of time delays, and sending and receiving of trigger signals. The overall timing system consists of a central timing system and a considerable number of local timing systems. A revision of the existing lTTEV1 and TDC cards was necessary as many components used for their fabrication were no longer available. The need for a bus interface for the lTTE card with long term availability has led to the decision to use a GBit Ethernet interface. By choosing a more powerful FPGA device, it was possible to increase the time resolution by a factor of two. This contribution starts with a short introduction of the W7-X timing system. The key properties, all extended as well as new features of the lTTEV2 card to face new requirements regarding data acquisition are described. The actual state of the development is given.