DMA transfer of data

摘要

An apparatus comprising a first transfer unit configured to DMA-transfer input data to a holding unit, a second transfer unit configured to DMA-transfer the input data held by the holding unit to at least one unit, a notification unit configured to notify, in accordance with the DMA transferring of the first transfer unit, that the input data held by the holding unit is updated, and a transfer control unit configured to control so as to operate the second transfer unit in one of a first mode for transferring the input data from the holding unit to the at least one unit in response to the notification and a second mode for transferring the input data independently of the notification, wherein the transfer unit performs the switching to the second mode after the operation in the first mode.

主权项

1. An apparatus comprising:
a first transfer unit configured to DMA-transfer input data to a holding unit; a second transfer unit configured to DMA-transfer the input data held by the holding unit to at least one unit; a notification unit configured to notify, in accordance with the DMA transfer of the input data by the first transfer unit, that the input data held by the holding unit is updated; and a transfer control unit configured to control so as to operate the second transfer unit in one of a first mode in which the input data is transferred from the holding unit to the at least one unit in response to the notification from the notification unit and a second mode in which the input data is transferred from the holding unit to the at least one unit independently of the notification, wherein the transfer control unit performs the switching to the second mode after the operation in the first mode.