Improvements relating to data transfer apparatus

摘要

A data movement controller (20) for controlling the movement between a shared data store (18) and a local data store (16) such that the data can be used by a plurality of parallel data processing elements is described. The data movement controller (20) comprises a set of data registers (56, 58, 60) which, in use, are loaded with different data parameters (57, 61, 62) to define a plurality of different ways in which data is transferred between the shared data store (18) and a set of processing elements (12). The data parameters (57, 61, 62) define a set of time delays for transferring portions of the data to predefined ones of the plurality of processing elements (12) and the type of overall data transfer that is to be carried out. The transfer of data in this programmable manner facilitates efficient use of the data movement controller (20) with SIMD associate processors (12) and in one example, the efficient processing of a stream of multiple-source digital data received at radio telecommunications base station to remove distortion due to multi-path effects.

主权项

1. A data movement controller for controlling the movement of data between a shared data store and a local data store such that the data can be used by a set of parallel data processing elements associated with the local data store, the data movement controller comprising a set of data registers which, in use, are loaded with different data parameters to define a plurality of different types of data transfer between the shared data store and a set of processing elements associated with the local data store; the data parameters defining a set of time delays for transferring portions of the data to predefined areas of the local data store for use with the set of parallel data processing elements and defining the types of data transfer that are to be carried out, wherein at least some of the data parameters are a plurality of skew offset parameters that are calculated by determining a plurality of phase delay times relating to multiple transmission paths between a source and a base station and calculating the plurality of skew offset parameters from the corresponding phase delay times, the values of the plurality of skew offset parameters specifying the manner in which data is to be transferred between the shared data store and the local data store, including the timing of each transfer, wherein the controller is arranged to implement a sub-sampled block mode transfer.