4. Function
DIO-48D-LPE
33
4.
Function
This section describes the features of the board.
Each function described here can be easily set and executed by using the bundled API driver library. For
details, refer to API-DIO HELP available after installation.
Data I/O Function
This board supports mode 0 of two i8255 chips, capable of input/output of up to 48 LVTTL-level active
high signals.
I/O setup of the port
The I/O function of the port must be set properly before the board can input/output data correctly.
Writing a control word sets each port for either input or output.
CAUTION
Each port is assigned as an input port when the power is turned on.
Start
set i8255 function
input/output data
end
Figure 4.1. I/O setup
Summary of Contents for DIO-48D-LPE
Page 7: ...vi DIO 48D LPE ...
Page 15: ...1 Before Using the Product 8 DIO 48D LPE ...
Page 33: ...2 Setup 26 DIO 48D LPE ...
Page 45: ...4 Function 38 DIO 48D LPE ...