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Abstract

A communications network controller module for storing media data in memory is disclosed. The module comprises a media access controller and a message handler. The message handler is configured, in response to receiving a frame comprising frame data from the media access controller, to identify a frame type for the frame, to identify a target queue in dependence upon the frame type, the target queue comprising a series of data areas in memory reserved for storing frames of the frame type, to obtain a current descriptor address of a current descriptor for the target queue, the current descriptor comprising a descriptor type field, a descriptor pointer field and a descriptor data size field, and to obtain an address in the series of data areas, to store a part of the frame data at the data area address. The message handler is configured, in dependence upon determining that a descriptor type held in the descriptor type field indicates the frame data part is to be stored contiguously in the series of data areas, to obtain the address at which to store the frame data part by reading the address from a current incremental address register for the target queue.

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First Claim