GALS CIRCUIT AND METHOD FOR THE OPERATION THEREOF

摘要

The invention relates to a locally synchronous GALS circuit comprising a circuit wrapper and a locally synchronous circuit module connected to the circuit wrapper. The circuit wrapper (350) comprises a request input (REQ_A) for request signals of an external GALS circuit, a data input for data signals (DATA_IN) of the external GALS circuit and a clock input for a periodical clock signal of an external clock generator. The circuit wrapper derives an internal request signal from the external request signal, which displays that validated data signals are received at a data input. The internal request signal is transferred to the locally synchronous circuit via an internal request interface. An internal clock signal (INT_CLK) is derived form the external clock signal and is delivered to the locally synchronous circuit module via the internal clock interface. The GALS circuit comprises a jitter generator (352) arranged in the appropriate location of the external or internal request signal or the external or internal clock signal path and is designed in such a way that a corresponding signal is received and transmitted with a random signal delay.