CPRI INTERFACE CIRCUIT

PROBLEM TO BE SOLVED: To maintain a normal operation of logic for fast C&M (Control&Management) data in logic for a CPRI (Common Public Radio Interface) interface for interfacing a communication device compatible with a CPRI standard, and to restore the logic for the fast C&M data to a normal operation state even if the logic is temporarily stuck in an abnormal operation state. SOLUTION: The operation state of logic for fast C&M data is estimated by monitoring the input/output situation of the fast C&M data, based on a transfer format of a CPRI from the outside of the logic for a CPRI interface. When the estimation result is an idle state, the logic for the fast C&M data is forcibly initialized. COPYRIGHT: (C)2011,JPO&INPIT