Upgrade of the ATLAS Central Trigger for LHC Run II

This talk focuses on the upgrades of the ATLAS central trigger processor (CTP) during the past year. The increased energy and luminosity of the LHC in the next run period requires a more selective trigger menu in order to satisfy the physics goals of ATLAS. Therefore the electronics of the CTP is upgraded and the commissioning status will be presented. In addition, the CTP software has been extended to allow the CTP to be partitioned into three freely configurable and separately operating sets of sub detectors. This new approach and its operational advantages are discussed as well.