Patent ID: 7068079

Claim:
A circuit device ( 1 ), comprising at least a first connection ( 3 a ) and a second connection ( 3 b ), adapted to receive a single clock pulse (CLK, CLK T ) at the first connection ( 3 a ), and adapted—alternatively to the single clock pulse (CLK, CLK T )—to receive a differential clock pulse (CLK, CLK T , /CLK, /CLK T ) at the first and second connections ( 3 a , 3 b ), and a detection facility ( 2 ) to detect which kind of clock pulse (CLK, CLK T ), (CLK, CLK T , /CLK, /CLK T ) is received, the detection facility ( 2 ) having a first state, if a differential clock pulse (CLK, CLK T , /CLK, /CLK T ) is received at the first and second connections ( 3 a , 3 b ), in which a first output signal is provided, and a second state, if a single clock pulse (CLK, CLK T ) is received at the first connection ( 3 a ), in which a second output signal different than the first output signal is provided.