What do DSP and DMA mean?

Digital signal processing digital signal processing

DMA is a new ATA/IDE interface protocol, which has been widely used since 1997, so it is also called Ultra ATA. Ultra DMA adopts bus master mode, and there is DMA direct memory access controller on the hard disk. Because the data transmission process does not need CPU intervention, it saves valuable CPU resources and makes CPU free up a lot of time to deal with other data and program requirements. Secondly, Ultra DMA uses the rising edge and falling edge of the clock pulse of IDE command as the memory read-write strobe signal, so that the data is transmitted once every half clock cycle, which doubles the maximum external data transmission rate from 16.6MB per second to 33.3MB, hence the name UltraDMA/33. Let's talk about the use and setting method of Ultra DMA hard disk.