High-speed Multifunction Boards
User Manual, Ver. 1.0, May 2015, PMH-029-10 Page 20
2.6
Digital Input/Output
The DIO signals, DO<0..11> and DI<0..11> are referenced to DGND. The figure shows DI<0..11>
configured for Digital Input and DO<0..11> configured for Digital Output. Digital Input applications
include receiving TTL signals and sensing external device states such as the state of a switch. Digital
Output applications include sending TTL signals and driving external devices such as the LED shown
in the figure.
DO0
DGND
PCIe-8620/8622
DO<0..11>
LED
+5 V
DI<0..11>
+5 V
DO1
DO2
DO11
...
DI0
DI1
DI2
DI11
...
Switch
TTL Signal
