Patent ID: 7765383
Filing Date: 2010-07-27
Classification: G06F

Abstract:
1. A data processing unit comprising: a storage unit retaining processing target data; a data processing circuit processing the data retained in the storage unit; a connection unit connected to a processing device that executes a computer program; a control unit invalidating, when a predetermined condition is detected, the data processing by the data processing circuit and requesting the processing device connected to the connection unit for the data processing, and an interrupt mask register that is set from the processing device via the connection unit, wherein the control unit includes a read control unit which provides the data processing circuit with the data in the storage unit in response to a first read request signal given from the data processing circuit, and provides the processing device with the data in the storage unit via the connection unit in response to a second read request signal given from the processing device, and wherein when a setting value in the interrupt mask register is a first value, the read control unit blocks the second read request signal, and provides the data processing circuit with the data in the storage unit.