Arm Limited

Johan Matterne

Martinus Cornelis Wezelenburg

Dirk Duerinckx

Sven Wambecq

Martinus Cornelius Wezelenburg

A data processing apparatus has a main controller for executing a programmable sequence of instructions including a transaction sequence of instructions used to process a transaction to be initiated by the data processing apparatus. The transaction sequence of instructions is programmed dependent on the interconnect protocol. The data processing apparatus has an interconnect interface unit including a plurality of queues with at least one send queue for issuing outbound payload information to the interconnect circuitry, and at least one receive queue for receiving inbound payload information from the interconnect circuitry. An interface controller is provided for pushing the outbound payload information on to the at least one send queue and popping the inbound payload information from the at least one receive queue, under the control of commands issued by the main controller. The interconnect interface unit has an interconnect port for communicating with the interconnect circuitry.

Data processing apparatus and method for connection to interconnect circuitry

A data processing apparatus and method of operation of such a data processing apparatus are disclosed. The data processing apparatus has a main processing unit operable to perform a plurality of data processing tasks, and a data engine for performing a number of those tasks on behalf of the main processing unit. At least one shared resource is allocatable to the data engine by the main processing unit for use by the data engine when performing data processing tasks on behalf of the main processing unit. The data engine comprises a data engine core for performing the tasks, and a data engine subsystem configurable by the main processing unit and arranged to manage communication between the data engine core and an allocated shared resource. The data engine core comprises a resource manager unit for acting as a master device with respect to the data engine subsystem in order to manage use of the allocated shared resource. It has been found that such an approach provides a particularly efficient implementation of a data engine within a data processing apparatus, which reduces the need for re-writing of existing code to enable it to be executed on such a data processing apparatus.

Use of a data engine within a data processing apparatus

A data processing system is provided comprising a main processor operable to perform a plurality of data processing tasks, a data engine having a data engine core operable to perform a number of said plurality of data processing tasks on behalf of said main processor and a data stream processing unit providing a data communication path between said main processing unit and said data engine core. The data stream processing unit has a control interface operable to receive from said data engine core at least one command and a data stream controller operable to receive at least one input data stream and to perform at least one operation on said at least one input data stream to generate at least one output data stream comprising a sequence of data elements. The data stream processing unit is responsive to said at least one command from said data engine core to control said data stream controller to perform said at least one operation.

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Landen, Belgium

Johan Matterne