ADLINK DAQe-2502 - Manual (Page 42)

32 Operation Theory
Hardware-Controlled Waveform Generation
FIFO is a hardware first-in first-out data queue that holds tempo-
rary digital codes for D/A conversion. When the DAQ-/DAQe-/PXI-
2502/2501 card operates in waveform generation mode, the
waveform patterns are stored in FIFO with 8K maximum samples.
Waveform patterns larger than 8K are also supported by utilizing
bus-mastering DMA transfer supported by the PCI controller. The
data format in FIFO is shown in Figure 4-7.
Figure 4-7: FIFO Data Format