Memory module e.g. SDRAM, includes device for isolating output data device when test mode is activated

摘要

A memory module (100) operates in a normal mode and in a test mode (TM) and includes a device (102) for outputting data from the memory module (100) and a device (104) for isolating the device (102) for outputting of data, when the test mode (TM) is activated. A data masking device is provided for the isolating device (104) for specifically outputting only certain sections of the data when a data masking state (DQM) is activated Independent claims are given for the following: (A) A test device; and (B) A method for testing a memory module.