ADLINK PCIe-7360 - Manual (Page 55)

Operations 45
PCIe-7360
nal (DO-REQ and DO-ACK) of external device to the
AFI3 and AFI4.
X Define DO starting mode configuration (NoWait or Wait-
TRIG)
Z
If choose WaitTRIG, you can define start trigger source
to be software trigger or external trigger (DO-Start or
DO-TRIG) from AFI0 to AFI7.
X Define DO write count
Step2: Execute DO DMA Write Command (handshake mode)
X
The DO data saved in the system memory is transferred to
DO FIFO directly and automatically by bus mastering DMA.
X
After DO data are ready, DO-REQ signal is generated and
DO data are sent to the external device. (action_1)
X
After DO-ACK signal from external device is gotten
(action_2)
Z
The action_1 to action_2 is repeated in handshake
mode.