Handling of write transactions in a data processing apparatus

Details Handling of write transactions in a data processing apparatus Handling of write transactions in a data processing apparatus

2008-04-01

2008-04-01

Sparks, Donald (Department: 2181)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output command process

C710S033000

Reexamination Certificate

active

10862885

ABSTRACT:
A data processing apparatus and method of handling write transactions in such an apparatus is provided. The apparatus has a plurality of devices, and bus circuitry providing connection paths between the plurality of devices. At least one of the devices has a bus master interface operable to generate write transactions for output via the bus circuitry, whilst at least one of the devices has a bus slave interface operable to receive the write transactions from the bus circuitry. A write transaction includes transferring a write address from a bus master interface to a bus slave interface and separately transferring write data from the bus master interface to the bus slave interface. In accordance with embodiments of the present invention, the bus master interface is allowed to generate a write transaction such that the write data is received at the bus slave interface before the associated write address. This leads to a significant decrease in the complexity of the apparatus.

REFERENCES:
patent: 6772254 (2004-08-01), Hofmann et al.

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