Circuit arrangement and method for setting operating parameters in a RAM module

A method for trimming at least one selected operating parameter of a RAM module, the method comprising:

• receiving a mode setting command at a command input of the RAM module, the command input being for receiving external operating commands;
• in response to the mode setting command, performing a setting step in which destination information which indicates a parameter to be trimmed and a value for the parameter to be trimmed are input at dedicated control information terminals of the RAM module in order to receive the value into a value register of the RAM module which is assigned to the parameter to be trimmed;
• wherein the dedicated control information terminals are selected from one or more address terminals and data terminals;
• testing the operation of the memory module, the operation taking place with the received value of the parameter to be trimmed;
• if the tested operation is not satisfactory, repeating the setting step and the testing step one or more times with the same destination information and a respectively changed value of the parameter to be trimmed for each instance the steps are repeated until a desired result of the testing step is achieved.

A random assess memory module, comprising:

• a command input for receiving external operating commands;
• additional terminals comprising data terminals for inputting and outputting memory data and address terminals for inputting address information;
• a plurality of the additional terminals being dedicated control information terminals dedicated to inputting control information for various operating parameters each defined by a plurality of values;
• and wherein a first group of the control information terminals is dedicated to inputting destination information which indicates a respective parameter to be set, and wherein a second group of the control information terminals is dedicated to inputting values for the respective parameter to be set;
• a register arrangement comprising a plurality of value registers and configured to be activated using a control signal in order to store the control information;
• wherein the register arrangement contains, for each value in a set of M different operating parameters, a respective value register configured to be set by an individual control signal and configured to store one of the values for the respective parameter to be set, the value to be stored being provided from the second group of the control information terminals;
• and
• a selection device which, for a given destination information input at the first group of control information terminals, transmits the values which have been input at the second group of control information terminals, only to those respective value registers which are assigned to the parameter to be set indicated by the given destination information.