Circuit for a Radio System, Use and Method for Operation

A circuit and method of operation for a circuit of a radio system in which a system time is divided into symbols, in which a system clock generator is activated in an operating mode, so that the system time is determined from an output clock signal of the system clock generator by counting, in which the system clock generator is deactivated in a sleep mode, in which an output clock signal of a sleep clock generator is blanked as a function of an output signal of a modulo divider in the sleep mode, and the system time is determined by counting, wherein an output frequency of the output clock signal of the sleep clock generator is a non-integer multiple of a symbol frequency, in which the modulo divider divides the output clock signal of the sleep clock generator by a division factor, and in which the division factor of the modulo divider is produced by changing between at least two integer divisor values.