Application Note
(AN241)
PCI-FRM01 Register Level Application Guide
2005 DAQ system, all rights reserved.
http://www.daqsystem.com
8. DIO(Digital Input/Output) Usage
The PCI-FRM01 has 16 Input port and 8 Output port at the Photo-coupler isolated DIO(Digital
Input/Output) function.
DIO
4Bit Photo-coupler output, 4Bit LVDS output Port
D0h
Description
I/O Address
Offset
Function
D4h
D8h
DCh
6Bit Photo-coupler input , 10Bit LVDS input Port
For future use
For future use
Out Port
Register
In Port
Reserved
Reserved
0
1
Used
4
31
Reserved
DIO
Out Port Register Bit Position & Usage
2
3
4
5
6
7
Bits 3-0 are the Photo-coupler isolated Digital outputs, bits 7-4 are the LVDS outputs. Please refer to
the manual for the circuit configuration.
0
Used
16
31
Reserved
DIO
In Port Register Bit Position & Usage
2
3
4
5
1
6
7
8
9
10
11
12
13
14
15
Bits 5-0 are the Photo-coupler isolated Digital Inputs, bits 15-8 are the LVDS Inputs. Please refer to
the manual for the circuit configuration.
