A Content-Terminated Direct Memory Access (CT-DMA) circuit autonomously transfers data of an unknown length from a source to a destination, terminating the transfer based on the content of the data. Filter criteria are provided to the CT-DMA prior to the data transfer. The filter criteria include pattern data that are compared to transfer data, and transfer termination rules for interpreting the comparison results. Data are written to the destination until the filter criteria are met. Representative filter criteria may include that one or more units of transfer data match pattern data; that one or more units of transfer data fail to match pattern data; or that one or more units of transfer data match pattern data a predetermined number of times.
申请公布号
WO2008092044(A2)
申请公布日期
2008.07.31
申请号
WO2008US51965
申请日期
2008.01.24
申请人
QUALCOMM INCORPORATED;SAPP, KEVIN ALLEN;DIEFFENDERFER, JAMES NORRIS