Circuit configuration with signal lines for serially transmitting a plurality of bit groups

A circuit configuration, comprising:

• a first signal line and a second signal line for serially transmitting a number of a plurality of bit groups;
• a transmission unit connected to said first signal line;
• a third signal line;
• a control line;
• and
• a receiver unit connected to said second signal line and coupled to said transmission unit through said third signal line and said control line;
• said transmission unit receiving a received first bit group to be transmitted and a subsequent, received second bit group to be transmitted and respectively transmits the received first bit group and the received second bit group to said receiver unit in one of an unaltered and an altered form resulting in a transmitted first bit group and a transmitted second bit group;
• said transmission unit respectively identifying a signal state change between bits in the transmitted first bit group and
• corresponding bits in the received second bit group and determines a number of signal state changes;
• said transmission unit transmitting the received second bit group to said receiver unit in one of an unaltered and an altered form on a basis of the number of signal state changes, with altered transmission being indicated by a control signal on said control line.