ADLINK PCIe-7350 - Manual (Page 77)

Function Block and Operation Theory 67
3.9.6 Handshaking
PCIe-7350’s Application Function I/O (AFI) can be configured as
handshaking mode (DI-REQ/DI-ACK/DI-TRIG/DO-REQ/DO-ACK/
DO-TRIG) to communicate with an external device using an
acknowledge signals to request and acknowledge each data
transfer. The handshaking mode can ensure the data transfer
without loss.
For the digital pattern acquisition using handshaking, through DI-
REQ input signal from external device and DI-ACK output signal to
the external device, the digital input can have simple handshaking
data transfer. (Refer to section 3.7.3 to 3.7.6 for more information)
For the digital pattern generation using handshaking, through DO-
REQ output signal to the external device and DO-ACK input signal
from external device, the digital output can have simple handshak-
ing data transfer.
Note: For the PCIe-7350 to communicate with peripheral devices
using handshaking, verify that the DUT and the PCIe-7350
have compatible timing.
Figure 3-37: Configured AFI as Handshaking Interface
Handshake
Mux
AFI0
AFI1
PCIe-7350 Card
DUT_0
AFI2
AFI3
AFI4
AFI5
AFI6
AFI7
DI-REQ
Acquisition
D0 ~ D31
DI Pattern
DI-ACK
DI-TRIG DI-TRIG
DI-REQ
DI-ACK
DO-REQ
Generation
DO-ACK
DO-TRIG DO-TRIG
DO-REQ
DO-ACK
DI Pattern
DO Pattern DO Pattern
DO-TRIG
DO-REQ
DO-ACK
DUT_1
DI-TRIG
DI-REQ
DI-ACK