ADLINK PCIe-7350 - Manual (Page 55)

Function Block and Operation Theory 45
The operation architecture of DO DMA in handshaking mode is
shown as below:
Figure 3-16: DO Handshaking Mode Architecture
The timing diagram of DO DMA in handshaking mode is shown as
below:
Figure 3-17: DO Handshaking Timing Diagram
Bus Master DMA
8K FIFO Flip Flop
D[31:0]
AFI[7:0]
Start Trigger
Mux
NoWait/
WaitTRIG
Software trigger DO-Start or DO-TRIG
PCIe-7350 Card
DO Data DO Data
External trigger in
DO-REQ
enable
Software trigger out
DO-ACK
AFI[7:0]
strobe out
ack
DO-REQ
DO-ACK
DO D1 D2
DO -REQ
DO Data
Write data to external device
DO -ACK
t
2
t
3
t
2
≥ 40 ns
t
3
≥ 50 ns