20
•
Operation Theorem
4
Operation Theorem
The operation theorem of the functions on PCI-7396 card is described
in this chapter. The operation theorem can help you to understand
how to manipulate or to program the PCI-7396.
4.1
Digital I/O Ports
4.1.1 Introduction
The PCI-7396 has 2/4 PPIs on board. Each 24-bit PPI is divided into
three 8-bit I/O ports: A, B, and C. All of these 6/12 ports can be
programmed as input or output independent.
4.1.2 External Trigger
The pin-99 EXTTRG support user to receive an external trigger to latch
input data. User can use function _7396_Set_Event_Edge to set
EXTTRG pin to be active high or active low.
Figure 4.1 External Trigger Function Block
EXTTRG
INPUT DATA
DATA to PC
Read Data
Содержание NuDAQ DIN-96DI
Страница 1: ...NuDAQ P C I 7 3 9 6 DIN 96DI DIN 96DO 96 CH Digital I O Cards U s e r s G u i d e ...
Страница 2: ......
Страница 16: ...8 Installation 2 3 PCI 7396 Layout Figure 2 1 PCI 7396 Layout ...
Страница 24: ...16 Registers Format BASE 07h x x x x x x x x P1n n port number Set to be 0 for input port 1 for output port ...