Method and apparatus for bursting operand transfers during dynamic bus sizing

A data processing system, comprising:

• a communication bus;
• a processing unit;
• and
• bus controller means for controlling said communication bus, said bus controller means being coupled between said communication bus and said processing unit, said bus controller means comprising:
• a first input;
• a second input;
• and
• an output;
• wherein in response to receiving a first requested data length value at the first input and a resource port size value at the second input, said bus controller means determines a bus size and a number of bursts to perform a burst access;
• wherein in response to determining the bus size and the number of bursts, said bus controller means dynamically sizes said communication bus and performs the burst access;
• and
• wherein the first requested data length value is received from within the data processing system and the resource port size value is received from external to the bus controller means.

A data processing system having burst access capability, comprising:

• a communication bus;
• a resource circuit, coupled to said communication bus;
• a processing unit;
• and
• a bus controller circuit, coupled between said communication bus and said processing unit, said bus controller circuit receiving a requested data length from said processing unit and receiving a resource port size from said resource circuit, said bus controller circuit providing the requested data length to said resource circuit, said bus controller circuit dynamically sizing said communication bus and determining a number of bursts in order to perform burst accesses in response to the requested data length and the resource port size.