Circuits for and methods of enabling the access to data

摘要

A circuit for enabling access to data is described. The circuit comprises a memory device storing data blocks having a first predetermined size; and a direct memory access circuit coupled to the memory device, the direct memory circuit accessing a data payload having a second predetermined size which is greater than the first predetermined size; wherein the direct memory access circuit accesses the data payload in response to a descriptor having a plurality of addresses corresponding to a predetermined number of the data blocks stored in the memory device. A method of enabling the access to data is also disclosed.

主权项

1. A circuit for enabling access to data, the circuit comprising:
a memory device storing data blocks having a first predetermined size; a direct memory access circuit coupled to the memory device, the direct memory circuit accessing a data payload having a second predetermined size which is greater than the first predetermined size. wherein the second predetermined size of the payload data comprises a multiple N of the first predetermined size of the data blocks; wherein the direct memory access circuit accesses the data payload in response to a descriptor having a plurality of addresses corresponding to a predetermined number of the data blocks stored in the memory device; and wherein the plurality of addresses comprises N+1 addresses and each data block other than a first data block and a last data block of the plurality of data blocks are boundary restricted.