ADLINK Technology PCI-7230 - Page 6

ii Table of Contents
PCI-7230 Pin Assignment .............................................24
cPCI-7230 Pin Assignment ...........................................26
LPCI/LPCIe-7230 Pin Assignment ................................28
PCI-7233 Pin Assignment .............................................30
PCI-7234 Pin Assignment .............................................32
PCI-7234P Pin Assignment ..........................................34
2.6 Termination Board Connection.......................................... 36
3 Register Format ................................................................ 37
3.1 PCI PnP Registers............................................................. 37
3.2 I/O Registers Format.......................................................... 38
3.3 Digital Input Register.......................................................... 39
3.4 Digital Output Register....................................................... 40
4 Operation Theory.............................................................. 41
4.1 Isolated Digital Input Circuits ............................................. 41
4.2 Isolated Digital Output Circuits........................................... 43
4.3 Change of State Detection................................................. 46
What is COS? ...............................................................46
Structure of COS detection and Dual Interrupt System 46
COS Detection ..............................................................48