Patent ID: 7340313
Filing Date: 2008-03-04
Classification: G11C

Abstract:
1. Device for monitoring an electronic circuit unit, having: a) at least one internal data line for forwarding internal data in the electronic circuit unit to external circuit units; and b) at least one data connection line for outputting the internal data from the electronic circuit unit and for inputting external data, which are provided by external circuit units, into the electronic circuit unit, wherein the device for monitoring an electronic circuit unit also has: c) a changeover unit, which is connected to the data connection line and is intended to change over the data connection line either to the internal data line or to internal signal lines; and d) a combinational logic unit for combining an initialization signal, which is provided by the electronic circuit unit to be monitored, with an external changeover signal, which is supplied via a changeover signal input of the electronic circuit unit to be monitored, and for outputting an activation signal to the changeover unit, e) it being possible to use the changeover unit, which has been activated by the activation signal, to switch the data connection line to the internal signal lines when the initialization signal indicates an initialization mode of the electronic circuit unit to be monitored.