ADLINK PCIe-7350 - Manual (Page 52)

42 Function Block and Operation Theory
The operation architecture of DI DMA in handshaking mode is
shown as below:
Figure 3-14: DI Handshaking Mode Architecture
Bus Master DMA
8K FIFO Flip Flop
D[31:0]
AFI[7:0]
Start Trigger
Mux
NoWait/
WaitTRIG
Software trigger DI-Start or DI-TRIG
PCIe-7350 Card
DI Data DI Data
External trigger in
DI-REQ
enable
Software trigger out
DI-ACK
AFI[7:0]
clk
ack
DI-REQ
DI-ACK