Method and apparatus for providing access protection in an integrated circuit

摘要

A method and apparatus for providing access protection in an integrated circuit (10). In one embodiment access protection circuitry (11) includes access attribute bits (51) which are compared to the access attributes (68) of a memory (14) request. If a mismatch occurs, an access fault signal (52) is asserted. If access fault signal (52) is asserted and a selective reset bit (48) has selected a first memory protection mode, then signal generation circuitry (44) asserts a reset signal (58). Reset signal (58) may be used to initiate a hardware reset of data processor (10). If access fault signal (52) is asserted and a selective reset bit (48) has selected a second memory protection mode, then signal generation circuitry (44) asserts an exception occurred signal (60).